UI color system generator

Generate an accessible UI color system

Pick a sector and tone — or drop in your own brand color — and HexPalette derives the full role set (primary, secondary, accent, surfaces, text, and success/warning/error states) in OKLCH, with every intended text pairing checked for WCAG AA contrast. Not five swatches: a system you can ship.

Sector SaaS product Healthcare Finance Crypto & Web3 E-commerce Dashboard
Tone Professional Calm Bold Playful Luxury
Theme Light Dark Primary & Accent stay fixed; surfaces, text and states flip. The export ships both.
Brand color
Brand
#0074CA
Primary
White text 4.8:1 AA
#C43258
Secondary
White text 5.3:1 AA
#589C00
Accent
Black text 6.2:1 AA
Button states
#0062B6
Primary hover
6.1:1 AA label
#0052A6
Primary active
pressed state
#B7CADE
Primary disabled
muted, non-interactive
#AF1947
Secondary hover
6.9:1 AA label
Links & focus
#3A7C00
Link
on background 4.9:1 AA
#256700
Link hover
on background 6.6:1 AA
#5DA110
Focus ring
ring 3.0:1 AA Large
#D3EEFF
Selected bg
Text 12.9:1 AAA
Surfaces
#EFFAFF
Background
base surface
#F9FFFF
Surface
Text 15.4:1 AAA
#CDDDEE
Border
subtle, non-text
Inputs
#F9FEFF
Input bg
Text 15.3:1 AAA
#B7C6D7
Input border
field edge
#5DA110
Input focus
matches focus ring
Text
#192532
Text
on background 14.6:1 AAA
#5B7188
Muted text
on background 4.8:1 AA
Success
#008323
Success
on background 4.6:1 AA
#FFFFFF
On Success
4.9:1 AA on Success
#C2F9C3
Success container
Text 4.7:1 AA
#2E7535
On Success container
on container 4.7:1 AA
Warning
#B25B00
Warning
on background 4.5:1 AA
#FFFFFF
On Warning
4.8:1 AA on Warning
#FFD9AE
Warning container
Text 4.7:1 AA
#964D08
On Warning container
on container 4.7:1 AA
Error
#DE2426
Error
on background 4.5:1 AA
#FFFFFF
On Error
4.8:1 AA on Error
#FFD1C7
Error container
Text 4.6:1 AA
#9C443C
On Error container
on container 4.6:1 AA

In a real finance app

Northwind Overview Transactions Cards
Total balance
$48,209.55
▲ 2.4% vs last month
Salary — Acme Inc +$6,400.00
Card payment −$128.40
Transfer Deposit Statement
✓ Transfer completed.
Completed Pending Declined

Every intended pairing here — text, buttons and states — meets WCAG AA by construction.

Export light + dark

:root {
  --primary: #0074CA;
  --on-primary: #FFFFFF;
  --primary-hover: #0062B6;
  --primary-active: #0052A6;
  --primary-disabled: #B7CADE;
  --secondary: #C43258;
  --secondary-hover: #AF1947;
  --accent: #589C00;
  --link: #3A7C00;
  --link-hover: #256700;
  --focus-ring: #5DA110;
  --selected-bg: #D3EEFF;
  --background: #EFFAFF;
  --surface: #F9FFFF;
  --border: #CDDDEE;
  --input-bg: #F9FEFF;
  --input-border: #B7C6D7;
  --input-focus: #5DA110;
  --text: #192532;
  --muted: #5B7188;
  --success: #008323;
  --warning: #B25B00;
  --error: #DE2426;
  --on-success: #FFFFFF;
  --success-container: #C2F9C3;
  --on-success-container: #2E7535;
  --on-warning: #FFFFFF;
  --warning-container: #FFD9AE;
  --on-warning-container: #964D08;
  --on-error: #FFFFFF;
  --error-container: #FFD1C7;
  --on-error-container: #9C443C;
}

[data-theme="dark"] {
  --primary: #0074CA;
  --on-primary: #FFFFFF;
  --primary-hover: #298AE2;
  --primary-active: #3C9AF3;
  --primary-disabled: #2A394A;
  --secondary: #C43258;
  --secondary-hover: #DD4B6C;
  --accent: #589C00;
  --link: #8ED554;
  --link-hover: #A4EC6C;
  --focus-ring: #8ED554;
  --selected-bg: #12283E;
  --background: #08111B;
  --surface: #111C28;
  --border: #313E4D;
  --input-bg: #111820;
  --input-border: #435160;
  --input-focus: #8ED554;
  --text: #E5F0FC;
  --muted: #9CB4CD;
  --success: #5BDC80;
  --warning: #FFAF36;
  --error: #FF6359;
  --on-success: #000000;
  --success-container: #063215;
  --on-success-container: #A2F5B4;
  --on-warning: #000000;
  --warning-container: #3D2200;
  --on-warning-container: #FFD181;
  --on-error: #000000;
  --error-container: #451915;
  --on-error-container: #FFBFB3;
}
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