#21c9da
a balanced, vivid cyan · cool · closest name: skyblue
RGB
33, 201, 218
HSL
186°, 74%, 49%
CMYK
85, 8, 0, 15
Luminance
0.4716
Every format
| HEX | #21c9da |
| RGB | rgb(33, 201, 218) |
| HSL | hsl(186, 74%, 49%) |
| CMYK | cmyk(85%, 8%, 0%, 15%) |
| LAB | lab(74.3 -33.7 -19.9) |
| LCH | lch(74.3 39.1 210.5) |
| OKLCH | oklch(0.765 0.126 206.0) |
Copy-ready code
/* CSS */
color: #21c9da;
background-color: #21c9da;
/* Tailwind (arbitrary) */
class="text-[#21c9da] bg-[#21c9da]"
/* SCSS */
$brand: #21c9da;
/* SwiftUI */
Color(red: 0.129, green: 0.788, blue: 0.855)
/* Android */
Color.parseColor("#21c9da")Accessibility — WCAG contrast
Aa
#21c9da on white: 2.01:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21c9da on black: 10.43:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green78.8%
Blue85.5%
CMYK percentages
Cyan84.9%
Magenta7.8%
Yellow0.0%
Key (black)14.5%
Color previews
#21c9da text on a black background
contrast 10.43:1
Card sample
#21c9da text on a white background
contrast 2.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21c9da;
Background color
Panel with #21c9da background
background-color: #21c9da;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21c9da;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 201, 218, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 201, 218, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21c9da; background: linear-gradient(135deg, #21c9da, #214EDA);