#21adef
a balanced, electric cyan · cool · closest name: steelblue
RGB
33, 173, 239
HSL
199°, 87%, 53%
CMYK
86, 28, 0, 6
Luminance
0.3644
Every format
| HEX | #21adef |
| RGB | rgb(33, 173, 239) |
| HSL | hsl(199, 87%, 53%) |
| CMYK | cmyk(86%, 28%, 0%, 6%) |
| LAB | lab(66.8 -12.4 -42.8) |
| LCH | lch(66.8 44.5 253.8) |
| OKLCH | oklch(0.708 0.146 236.3) |
Copy-ready code
/* CSS */
color: #21adef;
background-color: #21adef;
/* Tailwind (arbitrary) */
class="text-[#21adef] bg-[#21adef]"
/* SCSS */
$brand: #21adef;
/* SwiftUI */
Color(red: 0.129, green: 0.678, blue: 0.937)
/* Android */
Color.parseColor("#21adef")Accessibility — WCAG contrast
Aa
#21adef on white: 2.53:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21adef on black: 8.29:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green67.8%
Blue93.7%
CMYK percentages
Cyan86.2%
Magenta27.6%
Yellow0.0%
Key (black)6.3%
Color previews
#21adef text on a black background
contrast 8.29:1
Card sample
#21adef text on a white background
contrast 2.53:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21adef;
Background color
Panel with #21adef background
background-color: #21adef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21adef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 173, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 173, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21adef; background: linear-gradient(135deg, #21adef, #2124EF);