#3911bb
a dark, electric blue · warm · closest name: navy
RGB
57, 17, 187
HSL
254°, 83%, 40%
CMYK
70, 91, 0, 27
Luminance
0.0486
Every format
| HEX | #3911bb |
| RGB | rgb(57, 17, 187) |
| HSL | hsl(254, 83%, 40%) |
| CMYK | cmyk(70%, 91%, 0%, 27%) |
| LAB | lab(26.3 60.1 -78.6) |
| LCH | lch(26.3 99.0 307.4) |
| OKLCH | oklch(0.393 0.229 278.2) |
Copy-ready code
/* CSS */
color: #3911bb;
background-color: #3911bb;
/* Tailwind (arbitrary) */
class="text-[#3911bb] bg-[#3911bb]"
/* SCSS */
$brand: #3911bb;
/* SwiftUI */
Color(red: 0.224, green: 0.067, blue: 0.733)
/* Android */
Color.parseColor("#3911bb")Accessibility — WCAG contrast
Aa
#3911bb on white: 10.65:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#3911bb on black: 1.97:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green6.7%
Blue73.3%
CMYK percentages
Cyan69.5%
Magenta90.9%
Yellow0.0%
Key (black)26.7%
Color previews
#3911bb text on a black background
contrast 1.97:1
Card sample
#3911bb text on a white background
contrast 10.65:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3911bb;
Background color
Panel with #3911bb background
background-color: #3911bb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3911bb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 17, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 17, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3911bb; background: linear-gradient(135deg, #3911bb, #AA11BB);