#21b9da
a balanced, vivid cyan · cool · closest name: skyblue
RGB
33, 185, 218
HSL
191°, 74%, 49%
CMYK
85, 15, 0, 15
Luminance
0.4008
Every format
| HEX | #21b9da |
| RGB | rgb(33, 185, 218) |
| HSL | hsl(191, 74%, 49%) |
| CMYK | cmyk(85%, 15%, 0%, 15%) |
| LAB | lab(69.5 -25.9 -27.1) |
| LCH | lch(69.5 37.5 226.4) |
| OKLCH | oklch(0.727 0.125 217.6) |
Copy-ready code
/* CSS */
color: #21b9da;
background-color: #21b9da;
/* Tailwind (arbitrary) */
class="text-[#21b9da] bg-[#21b9da]"
/* SCSS */
$brand: #21b9da;
/* SwiftUI */
Color(red: 0.129, green: 0.725, blue: 0.855)
/* Android */
Color.parseColor("#21b9da")Accessibility — WCAG contrast
Aa
#21b9da on white: 2.33:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21b9da on black: 9.02:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green72.5%
Blue85.5%
CMYK percentages
Cyan84.9%
Magenta15.1%
Yellow0.0%
Key (black)14.5%
Color previews
#21b9da text on a black background
contrast 9.02:1
Card sample
#21b9da text on a white background
contrast 2.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21b9da;
Background color
Panel with #21b9da background
background-color: #21b9da;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21b9da;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 185, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 185, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21b9da; background: linear-gradient(135deg, #21b9da, #213EDA);