#1f55ab
a dark, vivid blue · cool · closest name: royalblue
RGB
31, 85, 171
HSL
217°, 69%, 40%
CMYK
82, 50, 0, 33
Luminance
0.0973
Every format
| HEX | #1f55ab |
| RGB | rgb(31, 85, 171) |
| HSL | hsl(217, 69%, 40%) |
| CMYK | cmyk(82%, 50%, 0%, 33%) |
| LAB | lab(37.4 14.9 -51.0) |
| LCH | lch(37.4 53.2 286.3) |
| OKLCH | oklch(0.465 0.149 259.6) |
Copy-ready code
/* CSS */
color: #1f55ab;
background-color: #1f55ab;
/* Tailwind (arbitrary) */
class="text-[#1f55ab] bg-[#1f55ab]"
/* SCSS */
$brand: #1f55ab;
/* SwiftUI */
Color(red: 0.122, green: 0.333, blue: 0.671)
/* Android */
Color.parseColor("#1f55ab")Accessibility — WCAG contrast
Aa
#1f55ab on white: 7.13:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#1f55ab on black: 2.95:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.2%
Green33.3%
Blue67.1%
CMYK percentages
Cyan81.9%
Magenta50.3%
Yellow0.0%
Key (black)32.9%
Color previews
#1f55ab text on a black background
contrast 2.95:1
Card sample
#1f55ab text on a white background
contrast 7.13:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1f55ab;
Background color
Panel with #1f55ab background
background-color: #1f55ab;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1f55ab;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(31, 85, 171, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 85, 171, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f55ab; background: linear-gradient(135deg, #1f55ab, #461FAB);