Cool Color Palette
Hues from the cool half of the wheel (green through violet) — calm, clean and technical. Palette anchors: #0E7C7B, #2563EB, #7C3AED.
coolcalm
#0E7C7B
#2563EB
#7C3AED
#64748B
#CBD5E1
#0e7c7b #2563eb #7c3aed #64748b #cbd5e1
#0E7C7B #2563EB #7C3AED #64748B #CBD5E1
Semantic roles
Assigned deterministically: lightest = background, darkest = text, most saturated = primary.
| background | #CBD5E1 | |
| surface | #64748B | |
| text | #7C3AED | |
| text-muted | #2563EB | |
| primary | #0E7C7B | |
| secondary | #2563EB | |
| accent | #64748B |
CSS variables
:root {
--background: #cbd5e1;
--surface: #64748b;
--text: #7c3aed;
--text-muted: #2563eb;
--primary: #0e7c7b;
--secondary: #2563eb;
--accent: #64748b;
}Accessibility matrix
Text color (rows) on background (columns). Green = WCAG AA pass for normal text (≥4.5:1).
| Text \ BG | #0E7C7B | #2563EB | #7C3AED | #64748B | #CBD5E1 |
|---|---|---|---|---|---|
| #0E7C7B | 1.0 | 1.0 | 1.1 | 1.1 | 3.4 |
| #2563EB | 1.0 | 1.0 | 1.1 | 1.1 | 3.5 |
| #7C3AED | 1.1 | 1.1 | 1.0 | 1.2 | 3.8 |
| #64748B | 1.1 | 1.1 | 1.2 | 1.0 | 3.2 |
| #CBD5E1 | 3.4 | 3.5 | 3.8 | 3.2 | 1.0 |
Under deuteranopia
Machado et al. (2009) simulation, severity 1.0 — approximation, not a medical tool.
Colors in this palette
#0E7C7B
rgb(14, 124, 123)
#2563EB
rgb(37, 99, 235)
#7C3AED
rgb(124, 58, 237)
#64748B
rgb(100, 116, 139)
#CBD5E1
rgb(203, 213, 225)
Similar palettes
FAQ
How do I use the cool color palette in CSS?
Copy the CSS variables below into :root and use var(--primary), var(--background) etc. Full palette: #0E7C7B, #2563EB, #7C3AED, #64748B, #CBD5E1.
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.