#21ade3
a balanced, electric cyan · cool · closest name: steelblue
RGB
33, 173, 227
HSL
197°, 78%, 51%
CMYK
86, 24, 0, 11
Luminance
0.3576
Every format
| HEX | #21ade3 |
| RGB | rgb(33, 173, 227) |
| HSL | hsl(197, 78%, 51%) |
| CMYK | cmyk(86%, 24%, 0%, 11%) |
| LAB | lab(66.3 -16.6 -37.0) |
| LCH | lch(66.3 40.6 245.8) |
| OKLCH | oklch(0.702 0.135 230.9) |
Copy-ready code
/* CSS */
color: #21ade3;
background-color: #21ade3;
/* Tailwind (arbitrary) */
class="text-[#21ade3] bg-[#21ade3]"
/* SCSS */
$brand: #21ade3;
/* SwiftUI */
Color(red: 0.129, green: 0.678, blue: 0.890)
/* Android */
Color.parseColor("#21ade3")Accessibility — WCAG contrast
Aa
#21ade3 on white: 2.58:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21ade3 on black: 8.15:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green67.8%
Blue89.0%
CMYK percentages
Cyan85.5%
Magenta23.8%
Yellow0.0%
Key (black)11.0%
Color previews
#21ade3 text on a black background
contrast 8.15:1
Card sample
#21ade3 text on a white background
contrast 2.58:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21ade3;
Background color
Panel with #21ade3 background
background-color: #21ade3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21ade3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 173, 227, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 173, 227, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21ade3; background: linear-gradient(135deg, #21ade3, #212CE3);