#331f8b
a dark, vivid blue · warm · closest name: indigo
RGB
51, 31, 139
HSL
251°, 64%, 33%
CMYK
63, 78, 0, 46
Luminance
0.0355
Every format
| HEX | #331f8b |
| RGB | rgb(51, 31, 139) |
| HSL | hsl(251, 64%, 33%) |
| CMYK | cmyk(63%, 78%, 0%, 46%) |
| LAB | lab(22.1 40.3 -56.4) |
| LCH | lch(22.1 69.3 305.6) |
| OKLCH | oklch(0.346 0.166 281.8) |
Copy-ready code
/* CSS */
color: #331f8b;
background-color: #331f8b;
/* Tailwind (arbitrary) */
class="text-[#331f8b] bg-[#331f8b]"
/* SCSS */
$brand: #331f8b;
/* SwiftUI */
Color(red: 0.200, green: 0.122, blue: 0.545)
/* Android */
Color.parseColor("#331f8b")Accessibility — WCAG contrast
Aa
#331f8b on white: 12.28:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#331f8b on black: 1.71:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red20.0%
Green12.2%
Blue54.5%
CMYK percentages
Cyan63.3%
Magenta77.7%
Yellow0.0%
Key (black)45.5%
Color previews
#331f8b text on a black background
contrast 1.71:1
Card sample
#331f8b text on a white background
contrast 12.28:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #331f8b;
Background color
Panel with #331f8b background
background-color: #331f8b;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #331f8b;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(51, 31, 139, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(51, 31, 139, 0.45);
Border & gradient
Gradient panel
border: 3px solid #331f8b; background: linear-gradient(135deg, #331f8b, #7B1F8B);