#40b5df
a balanced, vivid cyan · cool · closest name: skyblue
RGB
64, 181, 223
HSL
196°, 71%, 56%
CMYK
71, 19, 0, 13
Luminance
0.3947
Every format
| HEX | #40b5df |
| RGB | rgb(64, 181, 223) |
| HSL | hsl(196, 71%, 56%) |
| CMYK | cmyk(71%, 19%, 0%, 13%) |
| LAB | lab(69.1 -19.1 -30.5) |
| LCH | lch(69.1 36.0 238.0) |
| OKLCH | oklch(0.726 0.118 226.1) |
Copy-ready code
/* CSS */
color: #40b5df;
background-color: #40b5df;
/* Tailwind (arbitrary) */
class="text-[#40b5df] bg-[#40b5df]"
/* SCSS */
$brand: #40b5df;
/* SwiftUI */
Color(red: 0.251, green: 0.710, blue: 0.875)
/* Android */
Color.parseColor("#40b5df")Accessibility — WCAG contrast
Aa
#40b5df on white: 2.36:1
AA ✗ fail · AA-large ✗ · AAA ✗
Aa
#40b5df on black: 8.89:1
AA ✓ pass · AA-large ✓ · AAA ✓
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red25.1%
Green71.0%
Blue87.5%
CMYK percentages
Cyan71.3%
Magenta18.8%
Yellow0.0%
Key (black)12.5%
Color previews
#40b5df text on a black background
contrast 8.89:1
Card sample
#40b5df text on a white background
contrast 2.36:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #40b5df;
Background color
Panel with #40b5df background
background-color: #40b5df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #40b5df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(64, 181, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(64, 181, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #40b5df; background: linear-gradient(135deg, #40b5df, #404BDF);