Sienna Color Palette
Sienna Color Palette built around #A0522D, a dark warm brown anchor (WCAG contrast 3.74:1 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 | #EABBA7 | |
| surface | #AC6240 | |
| text | #5B2810 | |
| text-muted | #A0522D | |
| primary | #A0522D | |
| secondary | #477286 | |
| accent | #AC6240 |
CSS variables
:root {
--background: #eabba7;
--surface: #ac6240;
--text: #5b2810;
--text-muted: #a0522d;
--primary: #a0522d;
--secondary: #477286;
--accent: #ac6240;
}Accessibility matrix
Text color (rows) on background (columns). Green = WCAG AA pass for normal text (≥4.5:1).
| Text \ BG | #A0522D | #EABBA7 | #5B2810 | #477286 | #AC6240 |
|---|---|---|---|---|---|
| #A0522D | 1.0 | 3.3 | 2.1 | 1.1 | 1.2 |
| #EABBA7 | 3.3 | 1.0 | 6.9 | 3.0 | 2.7 |
| #5B2810 | 2.1 | 6.9 | 1.0 | 2.3 | 2.6 |
| #477286 | 1.1 | 3.0 | 2.3 | 1.0 | 1.1 |
| #AC6240 | 1.2 | 2.7 | 2.6 | 1.1 | 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 sienna color palette in CSS?
Copy the CSS variables below into :root and use var(--primary), var(--background) etc. Full palette: #A0522D, #EABBA7, #5B2810, #477286, #AC6240.
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.