#42f0df
a balanced, electric cyan · cool · closest name: turquoise
RGB
66, 240, 223
HSL
174°, 85%, 60%
CMYK
73, 0, 7, 6
Luminance
0.6881
Every format
| HEX | #42f0df |
| RGB | rgb(66, 240, 223) |
| HSL | hsl(174, 85%, 60%) |
| CMYK | cmyk(73%, 0%, 7%, 6%) |
| LAB | lab(86.4 -46.8 -4.4) |
| LCH | lch(86.4 47.0 185.3) |
| OKLCH | oklch(0.866 0.139 185.2) |
Copy-ready code
/* CSS */
color: #42f0df;
background-color: #42f0df;
/* Tailwind (arbitrary) */
class="text-[#42f0df] bg-[#42f0df]"
/* SCSS */
$brand: #42f0df;
/* SwiftUI */
Color(red: 0.259, green: 0.941, blue: 0.875)
/* Android */
Color.parseColor("#42f0df")Accessibility — WCAG contrast
Aa
#42f0df on white: 1.42:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#42f0df on black: 14.76:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.9%
Green94.1%
Blue87.5%
CMYK percentages
Cyan72.5%
Magenta0.0%
Yellow7.1%
Key (black)5.9%
Color previews
#42f0df text on a black background
contrast 14.76:1
Card sample
#42f0df text on a white background
contrast 1.42:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #42f0df;
Background color
Panel with #42f0df background
background-color: #42f0df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #42f0df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(66, 240, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 240, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #42f0df; background: linear-gradient(135deg, #42f0df, #428DF0);