#003658
a deep, electric blue · cool · closest name: darkslategray
RGB
0, 54, 88
HSL
203°, 100%, 17%
CMYK
100, 39, 0, 66
Luminance
0.0334
Every format
| HEX | #003658 |
| RGB | rgb(0, 54, 88) |
| HSL | hsl(203, 100%, 17%) |
| CMYK | cmyk(100%, 39%, 0%, 66%) |
| LAB | lab(21.4 -1.7 -24.9) |
| LCH | lch(21.4 25.0 266.2) |
| OKLCH | oklch(0.321 0.079 244.0) |
Copy-ready code
/* CSS */
color: #003658;
background-color: #003658;
/* Tailwind (arbitrary) */
class="text-[#003658] bg-[#003658]"
/* SCSS */
$brand: #003658;
/* SwiftUI */
Color(red: 0.000, green: 0.212, blue: 0.345)
/* Android */
Color.parseColor("#003658")Accessibility — WCAG contrast
Aa
#003658 on white: 12.59:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#003658 on black: 1.67:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red0.0%
Green21.2%
Blue34.5%
CMYK percentages
Cyan100.0%
Magenta38.6%
Yellow0.0%
Key (black)65.5%
Color previews
#003658 text on a black background
contrast 1.67:1
Card sample
#003658 text on a white background
contrast 12.59:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #003658;
Background color
Panel with #003658 background
background-color: #003658;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #003658;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(0, 54, 88, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(0, 54, 88, 0.45);
Border & gradient
Gradient panel
border: 3px solid #003658; background: linear-gradient(135deg, #003658, #050058);