#21b3df
a balanced, vivid cyan · cool · closest name: skyblue
RGB
33, 179, 223
HSL
194°, 75%, 50%
CMYK
85, 20, 0, 13
Luminance
0.3789
Every format
| HEX | #21b3df |
| RGB | rgb(33, 179, 223) |
| HSL | hsl(194, 75%, 50%) |
| CMYK | cmyk(85%, 20%, 0%, 13%) |
| LAB | lab(67.9 -21.1 -32.3) |
| LCH | lch(67.9 38.6 236.8) |
| OKLCH | oklch(0.715 0.129 224.8) |
Copy-ready code
/* CSS */
color: #21b3df;
background-color: #21b3df;
/* Tailwind (arbitrary) */
class="text-[#21b3df] bg-[#21b3df]"
/* SCSS */
$brand: #21b3df;
/* SwiftUI */
Color(red: 0.129, green: 0.702, blue: 0.875)
/* Android */
Color.parseColor("#21b3df")Accessibility — WCAG contrast
Aa
#21b3df on white: 2.45:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21b3df on black: 8.58:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green70.2%
Blue87.5%
CMYK percentages
Cyan85.2%
Magenta19.7%
Yellow0.0%
Key (black)12.5%
Color previews
#21b3df text on a black background
contrast 8.58:1
Card sample
#21b3df text on a white background
contrast 2.45:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21b3df;
Background color
Panel with #21b3df background
background-color: #21b3df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21b3df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 179, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 179, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21b3df; background: linear-gradient(135deg, #21b3df, #2134DF);