#40acdf
a balanced, vivid cyan · cool · closest name: steelblue
RGB
64, 172, 223
HSL
199°, 71%, 56%
CMYK
71, 23, 0, 13
Luminance
0.3592
Every format
| HEX | #40acdf |
| RGB | rgb(64, 172, 223) |
| HSL | hsl(199, 71%, 56%) |
| CMYK | cmyk(71%, 23%, 0%, 13%) |
| LAB | lab(66.5 -14.3 -34.6) |
| LCH | lch(66.5 37.4 247.5) |
| OKLCH | oklch(0.705 0.122 232.9) |
Copy-ready code
/* CSS */
color: #40acdf;
background-color: #40acdf;
/* Tailwind (arbitrary) */
class="text-[#40acdf] bg-[#40acdf]"
/* SCSS */
$brand: #40acdf;
/* SwiftUI */
Color(red: 0.251, green: 0.675, blue: 0.875)
/* Android */
Color.parseColor("#40acdf")Accessibility — WCAG contrast
Aa
#40acdf on white: 2.57:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40acdf on black: 8.18:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green67.5%
Blue87.5%
CMYK percentages
Cyan71.3%
Magenta22.9%
Yellow0.0%
Key (black)12.5%
Color previews
#40acdf text on a black background
contrast 8.18:1
Card sample
#40acdf text on a white background
contrast 2.57:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40acdf;
Background color
Panel with #40acdf background
background-color: #40acdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40acdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 172, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 172, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40acdf; background: linear-gradient(135deg, #40acdf, #4042DF);