#399cdf
a balanced, vivid blue · cool · closest name: steelblue
RGB
57, 156, 223
HSL
204°, 72%, 55%
CMYK
74, 30, 0, 13
Luminance
0.2997
Every format
| HEX | #399cdf |
| RGB | rgb(57, 156, 223) |
| HSL | hsl(204, 72%, 55%) |
| CMYK | cmyk(74%, 30%, 0%, 13%) |
| LAB | lab(61.6 -6.4 -42.1) |
| LCH | lch(61.6 42.6 261.4) |
| OKLCH | oklch(0.666 0.134 242.6) |
Copy-ready code
/* CSS */
color: #399cdf;
background-color: #399cdf;
/* Tailwind (arbitrary) */
class="text-[#399cdf] bg-[#399cdf]"
/* SCSS */
$brand: #399cdf;
/* SwiftUI */
Color(red: 0.224, green: 0.612, blue: 0.875)
/* Android */
Color.parseColor("#399cdf")Accessibility — WCAG contrast
Aa
#399cdf on white: 3.00:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#399cdf on black: 6.99:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green61.2%
Blue87.5%
CMYK percentages
Cyan74.4%
Magenta30.0%
Yellow0.0%
Key (black)12.5%
Color previews
#399cdf text on a black background
contrast 6.99:1
Card sample
#399cdf text on a white background
contrast 3.00:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #399cdf;
Background color
Panel with #399cdf background
background-color: #399cdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #399cdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 156, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 156, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #399cdf; background: linear-gradient(135deg, #399cdf, #4539DF);