#373dbb
a balanced, vivid blue · warm · closest name: slateblue
RGB
55, 61, 187
HSL
237°, 55%, 48%
CMYK
71, 67, 0, 27
Luminance
0.0774
Every format
| HEX | #373dbb |
| RGB | rgb(55, 61, 187) |
| HSL | hsl(237, 55%, 48%) |
| CMYK | cmyk(71%, 67%, 0%, 27%) |
| LAB | lab(33.4 39.2 -66.8) |
| LCH | lch(33.4 77.5 300.4) |
| OKLCH | oklch(0.442 0.194 273.2) |
Copy-ready code
/* CSS */
color: #373dbb;
background-color: #373dbb;
/* Tailwind (arbitrary) */
class="text-[#373dbb] bg-[#373dbb]"
/* SCSS */
$brand: #373dbb;
/* SwiftUI */
Color(red: 0.216, green: 0.239, blue: 0.733)
/* Android */
Color.parseColor("#373dbb")Accessibility — WCAG contrast
Aa
#373dbb on white: 8.24:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#373dbb on black: 2.55:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red21.6%
Green23.9%
Blue73.3%
CMYK percentages
Cyan70.6%
Magenta67.4%
Yellow0.0%
Key (black)26.7%
Color previews
#373dbb text on a black background
contrast 2.55:1
Card sample
#373dbb text on a white background
contrast 8.24:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #373dbb;
Background color
Panel with #373dbb background
background-color: #373dbb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #373dbb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(55, 61, 187, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(55, 61, 187, 0.45);
Border & gradient
Gradient panel
border: 3px solid #373dbb; background: linear-gradient(135deg, #373dbb, #8937BB);