diff --git a/front/src/modules/comments/components/comment-thread/CommentThreadRelationPicker.tsx b/front/src/modules/comments/components/comment-thread/CommentThreadRelationPicker.tsx
index 3c465d006..4eb623301 100644
--- a/front/src/modules/comments/components/comment-thread/CommentThreadRelationPicker.tsx
+++ b/front/src/modules/comments/components/comment-thread/CommentThreadRelationPicker.tsx
@@ -10,7 +10,7 @@ import {
 
 import { useHandleCheckableCommentThreadTargetChange } from '@/comments/hooks/useHandleCheckableCommentThreadTargetChange';
 import { CommentableEntityForSelect } from '@/comments/types/CommentableEntityForSelect';
-import CompanyChip from '@/companies/components/CompanyChip';
+import { CompanyChip } from '@/companies/components/CompanyChip';
 import { useScopedHotkeys } from '@/hotkeys/hooks/useScopedHotkeys';
 import { InternalHotkeysScope } from '@/hotkeys/types/internal/InternalHotkeysScope';
 import { PersonChip } from '@/people/components/PersonChip';
diff --git a/front/src/modules/comments/components/comment/CommentHeader.tsx b/front/src/modules/comments/components/comment/CommentHeader.tsx
index 3de95b834..c856f8126 100644
--- a/front/src/modules/comments/components/comment/CommentHeader.tsx
+++ b/front/src/modules/comments/components/comment/CommentHeader.tsx
@@ -8,7 +8,6 @@ import {
   beautifyExactDate,
   beautifyPastDateRelativeToNow,
 } from '@/utils/datetime/date-utils';
-import { isNonEmptyString } from '@/utils/type-guards/isNonEmptyString';
 
 type OwnProps = {
   comment: Pick<CommentForDrawer, 'id' | 'author' | 'createdAt'>;
@@ -74,17 +73,14 @@ export function CommentHeader({ comment, actionBar }: OwnProps) {
   const avatarUrl = author.avatarUrl;
   const commentId = comment.id;
 
-  const capitalizedFirstUsernameLetter = isNonEmptyString(authorName)
-    ? authorName.toLocaleUpperCase()[0]
-    : '';
-
   return (
     <StyledContainer>
       <StyledLeftContainer>
         <Avatar
           avatarUrl={avatarUrl}
           size={theme.icon.size.md}
-          placeholder={capitalizedFirstUsernameLetter}
+          colorId={author.id}
+          placeholder={author.displayName}
         />
         <StyledName>{authorName}</StyledName>
         {showDate && (
diff --git a/front/src/modules/companies/components/CompanyAccountOwnerCell.tsx b/front/src/modules/companies/components/CompanyAccountOwnerCell.tsx
index 2dbf0b1ff..51a07641a 100644
--- a/front/src/modules/companies/components/CompanyAccountOwnerCell.tsx
+++ b/front/src/modules/companies/components/CompanyAccountOwnerCell.tsx
@@ -16,7 +16,10 @@ export function CompanyAccountOwnerCell({ company }: OwnProps) {
       editModeContent={<CompanyAccountOwnerPicker company={company} />}
       nonEditModeContent={
         company.accountOwner?.displayName ? (
-          <PersonChip name={company.accountOwner?.displayName ?? ''} />
+          <PersonChip
+            id={company.accountOwner.id}
+            name={company.accountOwner?.displayName ?? ''}
+          />
         ) : (
           <></>
         )
diff --git a/front/src/modules/companies/components/CompanyChip.tsx b/front/src/modules/companies/components/CompanyChip.tsx
index 91e3cf94f..73610d726 100644
--- a/front/src/modules/companies/components/CompanyChip.tsx
+++ b/front/src/modules/companies/components/CompanyChip.tsx
@@ -5,7 +5,7 @@ import styled from '@emotion/styled';
 import { Avatar } from '@/users/components/Avatar';
 
 export type CompanyChipPropsType = {
-  id?: string;
+  id: string;
   name: string;
   picture?: string;
 };
@@ -50,7 +50,7 @@ const StyledContainerNoLink = styled.div`
   ${baseStyle}
 `;
 
-function CompanyChip({ id, name, picture }: CompanyChipPropsType) {
+export function CompanyChip({ id, name, picture }: CompanyChipPropsType) {
   const ContainerComponent = id ? StyledContainerLink : StyledContainerNoLink;
 
   return (
@@ -58,6 +58,7 @@ function CompanyChip({ id, name, picture }: CompanyChipPropsType) {
       {picture && (
         <Avatar
           avatarUrl={picture?.toString()}
+          colorId={id}
           placeholder={name}
           type="squared"
           size={14}
@@ -67,5 +68,3 @@ function CompanyChip({ id, name, picture }: CompanyChipPropsType) {
     </ContainerComponent>
   );
 }
-
-export default CompanyChip;
diff --git a/front/src/modules/companies/components/CompanyEditableNameCell.tsx b/front/src/modules/companies/components/CompanyEditableNameCell.tsx
index 12d888ba7..94047aa6e 100644
--- a/front/src/modules/companies/components/CompanyEditableNameCell.tsx
+++ b/front/src/modules/companies/components/CompanyEditableNameCell.tsx
@@ -8,7 +8,7 @@ import {
   useUpdateCompanyMutation,
 } from '~/generated/graphql';
 
-import CompanyChip from './CompanyChip';
+import { CompanyChip } from './CompanyChip';
 
 type OwnProps = {
   company: Pick<
diff --git a/front/src/modules/companies/components/__stories__/CompanyChip.stories.tsx b/front/src/modules/companies/components/__stories__/CompanyChip.stories.tsx
index 54c37f3dd..119682e99 100644
--- a/front/src/modules/companies/components/__stories__/CompanyChip.stories.tsx
+++ b/front/src/modules/companies/components/__stories__/CompanyChip.stories.tsx
@@ -1,9 +1,10 @@
+import { BrowserRouter } from 'react-router-dom';
 import styled from '@emotion/styled';
 import type { Meta, StoryObj } from '@storybook/react';
 
 import { getRenderWrapperForComponent } from '~/testing/renderWrappers';
 
-import CompanyChip from '../CompanyChip';
+import { CompanyChip } from '../CompanyChip';
 
 const meta: Meta<typeof CompanyChip> = {
   title: 'Modules/Companies/CompanyChip',
@@ -32,10 +33,13 @@ const TestCellContainer = styled.div`
 export const SmallName: Story = {
   render: getRenderWrapperForComponent(
     <TestCellContainer>
-      <CompanyChip
-        name="Airbnb"
-        picture="https://api.faviconkit.com/airbnb.com/144"
-      />
+      <BrowserRouter>
+        <CompanyChip
+          id="airbnb"
+          name="Airbnb"
+          picture="https://api.faviconkit.com/airbnb.com/144"
+        />
+      </BrowserRouter>
     </TestCellContainer>,
   ),
 };
@@ -43,10 +47,13 @@ export const SmallName: Story = {
 export const BigName: Story = {
   render: getRenderWrapperForComponent(
     <TestCellContainer>
-      <CompanyChip
-        name="Google with a real big name to overflow the cell"
-        picture="https://api.faviconkit.com/google.com/144"
-      />
+      <BrowserRouter>
+        <CompanyChip
+          id="google"
+          name="Google with a real big name to overflow the cell"
+          picture="https://api.faviconkit.com/google.com/144"
+        />
+      </BrowserRouter>
     </TestCellContainer>,
   ),
 };
diff --git a/front/src/modules/people/components/PeopleCompanyCell.tsx b/front/src/modules/people/components/PeopleCompanyCell.tsx
index 4df2f1602..1b90c62ed 100644
--- a/front/src/modules/people/components/PeopleCompanyCell.tsx
+++ b/front/src/modules/people/components/PeopleCompanyCell.tsx
@@ -1,4 +1,4 @@
-import CompanyChip from '@/companies/components/CompanyChip';
+import { CompanyChip } from '@/companies/components/CompanyChip';
 import { InternalHotkeysScope } from '@/hotkeys/types/internal/InternalHotkeysScope';
 import { useRecoilScopedState } from '@/recoil-scope/hooks/useRecoilScopedState';
 import { EditableCell } from '@/ui/components/editable-cell/EditableCell';
diff --git a/front/src/modules/people/components/PersonChip.tsx b/front/src/modules/people/components/PersonChip.tsx
index e7b656ceb..012bb145a 100644
--- a/front/src/modules/people/components/PersonChip.tsx
+++ b/front/src/modules/people/components/PersonChip.tsx
@@ -3,10 +3,10 @@ import { Link } from 'react-router-dom';
 import { Theme } from '@emotion/react';
 import styled from '@emotion/styled';
 
-import PersonPlaceholder from './person-placeholder.png';
+import { Avatar } from '@/users/components/Avatar';
 
 export type PersonChipPropsType = {
-  id?: string;
+  id: string;
   name: string;
   picture?: string;
 };
@@ -52,10 +52,12 @@ export function PersonChip({ id, name, picture }: PersonChipPropsType) {
   const ContainerComponent = id ? StyledContainerLink : StyledContainerNoLink;
   return (
     <ContainerComponent data-testid="person-chip" to={`/person/${id}`}>
-      <img
-        data-testid="person-chip-image"
-        src={picture ? picture.toString() : PersonPlaceholder.toString()}
-        alt="person"
+      <Avatar
+        avatarUrl={picture}
+        colorId={id}
+        placeholder={name}
+        size={14}
+        type="rounded"
       />
       <StyledName>{name}</StyledName>
     </ContainerComponent>
diff --git a/front/src/modules/people/components/__stories__/PeopleChip.stories.tsx b/front/src/modules/people/components/__stories__/PeopleChip.stories.tsx
new file mode 100644
index 000000000..b3ca5a646
--- /dev/null
+++ b/front/src/modules/people/components/__stories__/PeopleChip.stories.tsx
@@ -0,0 +1,47 @@
+import { BrowserRouter } from 'react-router-dom';
+import styled from '@emotion/styled';
+import type { Meta, StoryObj } from '@storybook/react';
+
+import { getRenderWrapperForComponent } from '~/testing/renderWrappers';
+
+import { PersonChip } from '../PersonChip';
+
+const meta: Meta<typeof PersonChip> = {
+  title: 'Modules/Companies/PersonChip',
+  component: PersonChip,
+};
+
+export default meta;
+type Story = StoryObj<typeof PersonChip>;
+
+const TestCellContainer = styled.div`
+  align-items: center;
+  background: ${({ theme }) => theme.background.primary};
+  display: flex;
+  height: fit-content;
+  justify-content: space-between;
+  max-width: 250px;
+  min-width: 250px;
+  overflow: hidden;
+  text-wrap: nowrap;
+`;
+
+export const SmallName: Story = {
+  render: getRenderWrapperForComponent(
+    <TestCellContainer>
+      <BrowserRouter>
+        <PersonChip id="tim_fake_id" name="Tim C." />
+      </BrowserRouter>
+    </TestCellContainer>,
+  ),
+};
+
+export const BigName: Story = {
+  render: getRenderWrapperForComponent(
+    <TestCellContainer>
+      <BrowserRouter>
+        <PersonChip id="steve_fake_id" name="Steve J." />
+      </BrowserRouter>
+    </TestCellContainer>,
+  ),
+};
diff --git a/front/src/modules/people/components/person-placeholder.png b/front/src/modules/people/components/person-placeholder.png
deleted file mode 100644
index 8beb87a11..000000000
Binary files a/front/src/modules/people/components/person-placeholder.png and /dev/null differ
diff --git a/front/src/modules/relation-picker/components/MultipleEntitySelect.tsx b/front/src/modules/relation-picker/components/MultipleEntitySelect.tsx
index 53b47d4f9..9d44f9d24 100644
--- a/front/src/modules/relation-picker/components/MultipleEntitySelect.tsx
+++ b/front/src/modules/relation-picker/components/MultipleEntitySelect.tsx
@@ -71,6 +71,7 @@ export function MultipleEntitySelect<
           >
             <Avatar
               avatarUrl={entity.avatarUrl}
+              colorId={entity.id}
               placeholder={entity.name}
               size={16}
               type={entity.avatarType ?? 'rounded'}
diff --git a/front/src/modules/relation-picker/components/SingleEntitySelectBase.tsx b/front/src/modules/relation-picker/components/SingleEntitySelectBase.tsx
index 172017c3a..193391a3d 100644
--- a/front/src/modules/relation-picker/components/SingleEntitySelectBase.tsx
+++ b/front/src/modules/relation-picker/components/SingleEntitySelectBase.tsx
@@ -69,6 +69,7 @@ export function SingleEntitySelectBase<
           >
             <Avatar
               avatarUrl={entity.avatarUrl}
+              colorId={entity.id}
               placeholder={entity.name}
               size={16}
               type={entity.avatarType ?? 'rounded'}
diff --git a/front/src/modules/ui/layout/show-page/ShowPageSummaryCard.tsx b/front/src/modules/ui/layout/show-page/ShowPageSummaryCard.tsx
index 8f1dd92bd..ca43bb487 100644
--- a/front/src/modules/ui/layout/show-page/ShowPageSummaryCard.tsx
+++ b/front/src/modules/ui/layout/show-page/ShowPageSummaryCard.tsx
@@ -9,6 +9,13 @@ import {
   beautifyPastDateRelativeToNow,
 } from '@/utils/datetime/date-utils';
 
+type OwnProps = {
+  id?: string;
+  logoOrAvatar?: string;
+  title: string;
+  date: string;
+};
+
 const StyledShowPageSummaryCard = styled.div`
   align-items: center;
   display: flex;
@@ -46,14 +53,11 @@ const StyledTooltip = styled(Tooltip)`
 `;
 
 export function ShowPageSummaryCard({
+  id,
   logoOrAvatar,
   title,
   date,
-}: {
-  logoOrAvatar?: string;
-  title: string;
-  date: string;
-}) {
+}: OwnProps) {
   const beautifiedCreatedAt =
     date !== '' ? beautifyPastDateRelativeToNow(date) : '';
   const exactCreatedAt = date !== '' ? beautifyExactDate(date) : '';
@@ -65,6 +69,7 @@ export function ShowPageSummaryCard({
       <Avatar
         avatarUrl={logoOrAvatar}
         size={theme.icon.size.xl}
+        colorId={id}
         placeholder={title}
       />
       <StyledInfoContainer>
diff --git a/front/src/modules/users/components/Avatar.tsx b/front/src/modules/users/components/Avatar.tsx
index 9612d1f80..99b170404 100644
--- a/front/src/modules/users/components/Avatar.tsx
+++ b/front/src/modules/users/components/Avatar.tsx
@@ -1,5 +1,6 @@
 import styled from '@emotion/styled';
 
+import { stringToHslColor } from '@/utils/string-to-hsl';
 import { isNonEmptyString } from '@/utils/type-guards/isNonEmptyString';
 
 export type AvatarType = 'squared' | 'rounded';
@@ -8,26 +9,23 @@ type OwnProps = {
   avatarUrl: string | null | undefined;
   size: number;
   placeholder: string;
+  colorId?: string;
   type?: AvatarType;
 };
 
-export const StyledAvatar = styled.div<Omit<OwnProps, 'placeholder'>>`
+export const StyledAvatar = styled.div<OwnProps & { colorId: string }>`
   align-items: center;
-  background-color: ${(props) =>
-    !isNonEmptyString(props.avatarUrl)
-      ? props.theme.background.tertiary
-      : 'none'};
-  ${(props) =>
-    isNonEmptyString(props.avatarUrl)
-      ? `background-image: url(${props.avatarUrl});`
-      : ''}
+  background-color: ${({ avatarUrl, colorId }) =>
+    !isNonEmptyString(avatarUrl) ? stringToHslColor(colorId, 75, 85) : 'none'};
+  ${({ avatarUrl }) =>
+    isNonEmptyString(avatarUrl) ? `background-image: url(${avatarUrl});` : ''}
   background-size: cover;
   border-radius: ${(props) => (props.type === 'rounded' ? '50%' : '2px')};
-  color: ${({ theme }) => theme.font.color.primary};
+  color: ${({ colorId }) => stringToHslColor(colorId, 75, 25)};
   display: flex;
 
   flex-shrink: 0;
-  font-size: ${({ theme }) => theme.font.size.sm};
+  font-size: ${({ theme }) => theme.font.size.xs};
   font-weight: ${({ theme }) => theme.font.weight.medium};
 
   height: ${(props) => props.size}px;
@@ -39,12 +37,19 @@ export function Avatar({
   avatarUrl,
   size,
   placeholder,
+  colorId = placeholder,
   type = 'squared',
 }: OwnProps) {
   const noAvatarUrl = !isNonEmptyString(avatarUrl);
 
   return (
-    <StyledAvatar avatarUrl={avatarUrl} size={size} type={type}>
+    <StyledAvatar
+      avatarUrl={avatarUrl}
+      placeholder={placeholder}
+      size={size}
+      type={type}
+      colorId={colorId}
+    >
       {noAvatarUrl && placeholder[0]?.toLocaleUpperCase()}
     </StyledAvatar>
   );
diff --git a/front/src/modules/utils/string-to-hsl.ts b/front/src/modules/utils/string-to-hsl.ts
new file mode 100644
index 000000000..87ab93281
--- /dev/null
+++ b/front/src/modules/utils/string-to-hsl.ts
@@ -0,0 +1,13 @@
+export function stringToHslColor(
+  str: string,
+  saturation: number,
+  lightness: number,
+) {
+  let hash = 0;
+  for (let i = 0; i < str.length; i++) {
+    hash = str.charCodeAt(i) + ((hash << 5) - hash);
+  }
+
+  const h = hash % 360;
+  return 'hsl(' + h + ', ' + saturation + '%, ' + lightness + '%)';
+}
diff --git a/front/src/modules/workspace/components/WorkspaceMemberCard.tsx b/front/src/modules/workspace/components/WorkspaceMemberCard.tsx
index 74cc05f05..b5ca0a4ec 100644
--- a/front/src/modules/workspace/components/WorkspaceMemberCard.tsx
+++ b/front/src/modules/workspace/components/WorkspaceMemberCard.tsx
@@ -33,7 +33,7 @@ const EmailText = styled.span`
 
 type OwnProps = {
   workspaceMember: {
-    user: Pick<User, 'firstName' | 'lastName' | 'avatarUrl' | 'email'>;
+    user: Pick<User, 'id' | 'firstName' | 'lastName' | 'avatarUrl' | 'email'>;
   };
   accessory?: React.ReactNode;
 };
@@ -43,6 +43,7 @@ export function WorkspaceMemberCard({ workspaceMember, accessory }: OwnProps) {
     <StyledContainer>
       <Avatar
         avatarUrl={getImageAbsoluteURIOrBase64(workspaceMember.user.avatarUrl)}
+        colorId={workspaceMember.user.id}
         placeholder={workspaceMember.user.firstName || ''}
         type="squared"
         size={40}
diff --git a/front/src/pages/companies/CompanyShow.tsx b/front/src/pages/companies/CompanyShow.tsx
index 482a1ee07..09ea094ef 100644
--- a/front/src/pages/companies/CompanyShow.tsx
+++ b/front/src/pages/companies/CompanyShow.tsx
@@ -37,6 +37,7 @@ export function CompanyShow() {
       <>
         <ShowPageLeftContainer>
           <ShowPageSummaryCard
+            id={company?.id}
             logoOrAvatar={getLogoUrlFromDomainName(company?.domainName ?? '')}
             title={company?.name ?? 'No name'}
             date={company?.createdAt ?? ''}
diff --git a/front/src/pages/people/PersonShow.tsx b/front/src/pages/people/PersonShow.tsx
index fa79edfde..9e8a0e158 100644
--- a/front/src/pages/people/PersonShow.tsx
+++ b/front/src/pages/people/PersonShow.tsx
@@ -28,6 +28,7 @@ export function PersonShow() {
       <>
         <ShowPageLeftContainer>
           <ShowPageSummaryCard
+            id={person?.id}
             title={person?.displayName ?? 'No name'}
             date={person?.createdAt ?? ''}
           />