#21daaa
a balanced, vivid cyan · cool · closest name: aquamarine
RGB
33, 218, 170
HSL
164°, 74%, 49%
CMYK
85, 0, 22, 15
Luminance
0.5337
Every format
| HEX | #21daaa |
| RGB | rgb(33, 218, 170) |
| HSL | hsl(164, 74%, 49%) |
| CMYK | cmyk(85%, 0%, 22%, 15%) |
| LAB | lab(78.1 -54.3 11.5) |
| LCH | lch(78.1 55.5 168.0) |
| OKLCH | oklch(0.792 0.153 169.0) |
Copy-ready code
/* CSS */
color: #21daaa;
background-color: #21daaa;
/* Tailwind (arbitrary) */
class="text-[#21daaa] bg-[#21daaa]"
/* SCSS */
$brand: #21daaa;
/* SwiftUI */
Color(red: 0.129, green: 0.855, blue: 0.667)
/* Android */
Color.parseColor("#21daaa")Accessibility — WCAG contrast
Aa
#21daaa on white: 1.80:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21daaa on black: 11.67:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green85.5%
Blue66.7%
CMYK percentages
Cyan84.9%
Magenta0.0%
Yellow22.0%
Key (black)14.5%
Color previews
#21daaa text on a black background
contrast 11.67:1
Card sample
#21daaa text on a white background
contrast 1.80:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21daaa;
Background color
Panel with #21daaa background
background-color: #21daaa;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21daaa;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 218, 170, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 218, 170, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21daaa; background: linear-gradient(135deg, #21daaa, #218FDA);