#0039bb
a dark, electric blue · cool · closest name: slateblue
RGB
0, 57, 187
HSL
222°, 100%, 37%
CMYK
100, 70, 0, 27
Luminance
0.0651
Every format
| HEX | #0039bb |
| RGB | rgb(0, 57, 187) |
| HSL | hsl(222, 100%, 37%) |
| CMYK | cmyk(100%, 70%, 0%, 27%) |
| LAB | lab(30.7 38.2 -71.4) |
| LCH | lch(30.7 81.0 298.1) |
| OKLCH | oklch(0.417 0.209 262.9) |
Copy-ready code
/* CSS */
color: #0039bb;
background-color: #0039bb;
/* Tailwind (arbitrary) */
class="text-[#0039bb] bg-[#0039bb]"
/* SCSS */
$brand: #0039bb;
/* SwiftUI */
Color(red: 0.000, green: 0.224, blue: 0.733)
/* Android */
Color.parseColor("#0039bb")Accessibility — WCAG contrast
Aa
#0039bb on white: 9.12:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#0039bb on black: 2.30:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green22.4%
Blue73.3%
CMYK percentages
Cyan100.0%
Magenta69.5%
Yellow0.0%
Key (black)26.7%
Color previews
#0039bb text on a black background
contrast 2.30:1
Card sample
#0039bb text on a white background
contrast 9.12:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #0039bb;
Background color
Panel with #0039bb background
background-color: #0039bb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #0039bb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 57, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 57, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #0039bb; background: linear-gradient(135deg, #0039bb, #4400BB);