#40b8df
a balanced, vivid cyan · cool · closest name: skyblue
RGB
64, 184, 223
HSL
195°, 71%, 56%
CMYK
71, 18, 0, 13
Luminance
0.4070
Every format
| HEX | #40b8df |
| RGB | rgb(64, 184, 223) |
| HSL | hsl(195, 71%, 56%) |
| CMYK | cmyk(71%, 18%, 0%, 13%) |
| LAB | lab(70.0 -20.6 -29.1) |
| LCH | lch(70.0 35.7 234.7) |
| OKLCH | oklch(0.733 0.118 223.8) |
Copy-ready code
/* CSS */
color: #40b8df;
background-color: #40b8df;
/* Tailwind (arbitrary) */
class="text-[#40b8df] bg-[#40b8df]"
/* SCSS */
$brand: #40b8df;
/* SwiftUI */
Color(red: 0.251, green: 0.722, blue: 0.875)
/* Android */
Color.parseColor("#40b8df")Accessibility — WCAG contrast
Aa
#40b8df on white: 2.30:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40b8df on black: 9.14:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green72.2%
Blue87.5%
CMYK percentages
Cyan71.3%
Magenta17.5%
Yellow0.0%
Key (black)12.5%
Color previews
#40b8df text on a black background
contrast 9.14:1
Card sample
#40b8df text on a white background
contrast 2.30:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40b8df;
Background color
Panel with #40b8df background
background-color: #40b8df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40b8df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 184, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 184, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40b8df; background: linear-gradient(135deg, #40b8df, #404EDF);