#28397b
a dark, vivid blue · warm · closest name: midnightblue
RGB
40, 57, 123
HSL
228°, 51%, 32%
CMYK
68, 54, 0, 52
Luminance
0.0481
Every format
| HEX | #28397b |
| RGB | rgb(40, 57, 123) |
| HSL | hsl(228, 51%, 32%) |
| CMYK | cmyk(68%, 54%, 0%, 52%) |
| LAB | lab(26.2 16.3 -39.7) |
| LCH | lch(26.2 43.0 292.3) |
| OKLCH | oklch(0.370 0.114 269.3) |
Copy-ready code
/* CSS */
color: #28397b;
background-color: #28397b;
/* Tailwind (arbitrary) */
class="text-[#28397b] bg-[#28397b]"
/* SCSS */
$brand: #28397b;
/* SwiftUI */
Color(red: 0.157, green: 0.224, blue: 0.482)
/* Android */
Color.parseColor("#28397b")Accessibility — WCAG contrast
Aa
#28397b on white: 10.71:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#28397b on black: 1.96:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green22.4%
Blue48.2%
CMYK percentages
Cyan67.5%
Magenta53.7%
Yellow0.0%
Key (black)51.8%
Color previews
#28397b text on a black background
contrast 1.96:1
Card sample
#28397b text on a white background
contrast 10.71:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #28397b;
Background color
Panel with #28397b background
background-color: #28397b;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #28397b;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 57, 123, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 57, 123, 0.45);
Border & gradient
Gradient panel
border: 3px solid #28397b; background: linear-gradient(135deg, #28397b, #4E287B);