Blue Danube
#2D5970A commanding, cool blue that reads as both calm and architectural.
Spec Sheet
Hex#2D5970
RGB45, 89, 112
HSL201°, 43%, 31%
On White 7.57:1 AAA
On Black 2.77:1 Fail
For AI Tools
Copy this snippet and paste it into any AI tool
Use these colors for all components: Background: #E1E7EA Text: #14181A Accent: #2D5970 Support: #C28361 Neutral: #B6BACD Rules: - Use Background for surfaces and canvas - Use Ink for body text and icons - Never use Accent as body text — contrast is too low - Maintain 4.5:1 minimum contrast for normal text
Design System from Blue Danube Palettes are free. Exports aren't.
CSS Variables
:root {
--palette-background: #E1E7EA;
--palette-ink: #14181A;
--palette-accent: #2D5970;
--palette-support: #C28361;
--palette-neutral: #B6BACD;
}Tailwind Config
{
"palette-background": "#E1E7EA",
"palette-ink": "#14181A",
"palette-accent": "#2D5970",
"palette-support": "#C28361",
"palette-neutral": "#B6BACD"
}Color Blindness Simulation
#4E5871
Protanopia#455170
Deuteranopia#005F61
TritanopiaBuild a design system around Blue Danube.