#40f4ff
a balanced, electric cyan · cool · closest name: cyan
RGB
64, 244, 255
HSL
184°, 100%, 63%
CMYK
75, 4, 0, 0
Luminance
0.7301
Every format
| HEX | #40f4ff |
| RGB | rgb(64, 244, 255) |
| HSL | hsl(184, 100%, 63%) |
| CMYK | cmyk(75%, 4%, 0%, 0%) |
| LAB | lab(88.5 -40.0 -18.1) |
| LCH | lch(88.5 43.9 204.3) |
| OKLCH | oklch(0.885 0.139 201.2) |
Copy-ready code
/* CSS */
color: #40f4ff;
background-color: #40f4ff;
/* Tailwind (arbitrary) */
class="text-[#40f4ff] bg-[#40f4ff]"
/* SCSS */
$brand: #40f4ff;
/* SwiftUI */
Color(red: 0.251, green: 0.957, blue: 1.000)
/* Android */
Color.parseColor("#40f4ff")Accessibility — WCAG contrast
Aa
#40f4ff on white: 1.35:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40f4ff on black: 15.60:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green95.7%
Blue100.0%
CMYK percentages
Cyan74.9%
Magenta4.3%
Yellow0.0%
Key (black)0.0%
Color previews
#40f4ff text on a black background
contrast 15.60:1
Card sample
#40f4ff text on a white background
contrast 1.35:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40f4ff;
Background color
Panel with #40f4ff background
background-color: #40f4ff;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40f4ff;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 244, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 244, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40f4ff; background: linear-gradient(135deg, #40f4ff, #4074FF);