Basic Blue
#3F457DA rich, steely purple that brings theatrical weight to bedrooms and libraries.
Spec Sheet
Hex#3F457D
RGB63, 69, 125
HSL234°, 33%, 37%
On White 8.9:1 AAA
On Black 2.36:1 Fail
For AI Tools
Copy this snippet and paste it into any AI tool
Use these colors for all components: Background: #EDEDF2 Text: #131525 Accent: #3F457D Support: #ADA776 Neutral: #C2B7D1 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 Basic Blue Palettes are free. Exports aren't.
CSS Variables
:root {
--palette-background: #EDEDF2;
--palette-ink: #131525;
--palette-accent: #3F457D;
--palette-support: #ADA776;
--palette-neutral: #C2B7D1;
}Tailwind Config
{
"palette-background": "#EDEDF2",
"palette-ink": "#131525",
"palette-accent": "#3F457D",
"palette-support": "#ADA776",
"palette-neutral": "#C2B7D1"
}Color Blindness Simulation
#2F4C7F
Protanopia#2A477C
Deuteranopia#28515B
TritanopiaBuild a design system around Basic Blue.