#21f4df
a balanced, electric cyan · cool · closest name: turquoise
RGB
33, 244, 223
HSL
174°, 91%, 54%
CMYK
87, 0, 9, 4
Luminance
0.7035
Every format
| HEX | #21f4df |
| RGB | rgb(33, 244, 223) |
| HSL | hsl(174, 91%, 54%) |
| CMYK | cmyk(87%, 0%, 9%, 4%) |
| LAB | lab(87.2 -51.3 -3.3) |
| LCH | lch(87.2 51.4 183.7) |
| OKLCH | oklch(0.871 0.151 183.7) |
Copy-ready code
/* CSS */
color: #21f4df;
background-color: #21f4df;
/* Tailwind (arbitrary) */
class="text-[#21f4df] bg-[#21f4df]"
/* SCSS */
$brand: #21f4df;
/* SwiftUI */
Color(red: 0.129, green: 0.957, blue: 0.875)
/* Android */
Color.parseColor("#21f4df")Accessibility — WCAG contrast
Aa
#21f4df on white: 1.39:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#21f4df on black: 15.07:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green95.7%
Blue87.5%
CMYK percentages
Cyan86.5%
Magenta0.0%
Yellow8.6%
Key (black)4.3%
Color previews
#21f4df text on a black background
contrast 15.07:1
Card sample
#21f4df text on a white background
contrast 1.39:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #21f4df;
Background color
Panel with #21f4df background
background-color: #21f4df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #21f4df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 244, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 244, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #21f4df; background: linear-gradient(135deg, #21f4df, #217CF4);