#40d3df
a balanced, vivid cyan · cool · closest name: turquoise
RGB
64, 211, 223
HSL
185°, 71%, 56%
CMYK
71, 5, 0, 13
Luminance
0.5301
Every format
| HEX | #40d3df |
| RGB | rgb(64, 211, 223) |
| HSL | hsl(185, 71%, 56%) |
| CMYK | cmyk(71%, 5%, 0%, 13%) |
| LAB | lab(77.9 -34.0 -17.1) |
| LCH | lch(77.9 38.0 206.7) |
| OKLCH | oklch(0.796 0.121 203.1) |
Copy-ready code
/* CSS */
color: #40d3df;
background-color: #40d3df;
/* Tailwind (arbitrary) */
class="text-[#40d3df] bg-[#40d3df]"
/* SCSS */
$brand: #40d3df;
/* SwiftUI */
Color(red: 0.251, green: 0.827, blue: 0.875)
/* Android */
Color.parseColor("#40d3df")Accessibility — WCAG contrast
Aa
#40d3df on white: 1.81:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40d3df on black: 11.60:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green82.7%
Blue87.5%
CMYK percentages
Cyan71.3%
Magenta5.4%
Yellow0.0%
Key (black)12.5%
Color previews
#40d3df text on a black background
contrast 11.60:1
Card sample
#40d3df text on a white background
contrast 1.81:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40d3df;
Background color
Panel with #40d3df background
background-color: #40d3df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40d3df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 211, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 211, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40d3df; background: linear-gradient(135deg, #40d3df, #4069DF);