Copper Color Palette
Copper Color Palette built around #B87333, a dark warm orange anchor (WCAG contrast 5.54:1 against black). The set combines a light tint + a deep shade + a softened complement + a neutral ground so any palette position has a text-safe pairing.
Semantic roles
Assigned deterministically: lightest = background, darkest = text, most saturated = primary.
| background | #F2C9A9 | |
| surface | #C18047 | |
| text | #65390D | |
| text-muted | #51779A | |
| primary | #B87333 | |
| secondary | #51779A | |
| accent | #C18047 |
CSS variables
:root {
--background: #f2c9a9;
--surface: #c18047;
--text: #65390d;
--text-muted: #51779a;
--primary: #b87333;
--secondary: #51779a;
--accent: #c18047;
}Accessibility matrix
Text color (rows) on background (columns). Green = WCAG AA pass for normal text (≥4.5:1).
| Text \ BG | #B87333 | #F2C9A9 | #65390D | #51779A | #C18047 |
|---|---|---|---|---|---|
| #B87333 | 1.0 | 2.5 | 2.6 | 1.2 | 1.2 |
| #F2C9A9 | 2.5 | 1.0 | 6.4 | 3.1 | 2.1 |
| #65390D | 2.6 | 6.4 | 1.0 | 2.1 | 3.0 |
| #51779A | 1.2 | 3.1 | 2.1 | 1.0 | 1.4 |
| #C18047 | 1.2 | 2.1 | 3.0 | 1.4 | 1.0 |
Under deuteranopia
Machado et al. (2009) simulation, severity 1.0 — approximation, not a medical tool.
Colors in this palette
Similar palettes
FAQ
How do I use the copper color palette in CSS?
Copy the CSS variables below into :root and use var(--primary), var(--background) etc. Full palette: #B87333, #F2C9A9, #65390D, #51779A, #C18047.
Do these colors pass accessibility checks?
See the WCAG matrix on this page: every text-on-background pairing with ratio ≥ 4.5 passes AA for normal text; ≥ 3 passes AA for large text and UI components.