#2181df
a balanced, vivid blue · cool · closest name: dodgerblue
RGB
33, 129, 223
HSL
210°, 75%, 50%
CMYK
85, 42, 0, 13
Luminance
0.2135
Every format
| HEX | #2181df |
| RGB | rgb(33, 129, 223) |
| HSL | hsl(210, 75%, 50%) |
| CMYK | cmyk(85%, 42%, 0%, 13%) |
| LAB | lab(53.3 7.2 -55.3) |
| LCH | lch(53.3 55.8 277.4) |
| OKLCH | oklch(0.599 0.166 252.6) |
Copy-ready code
/* CSS */
color: #2181df;
background-color: #2181df;
/* Tailwind (arbitrary) */
class="text-[#2181df] bg-[#2181df]"
/* SCSS */
$brand: #2181df;
/* SwiftUI */
Color(red: 0.129, green: 0.506, blue: 0.875)
/* Android */
Color.parseColor("#2181df")Accessibility — WCAG contrast
Aa
#2181df on white: 3.98:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#2181df on black: 5.27:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green50.6%
Blue87.5%
CMYK percentages
Cyan85.2%
Magenta42.2%
Yellow0.0%
Key (black)12.5%
Color previews
#2181df text on a black background
contrast 5.27:1
Card sample
#2181df text on a white background
contrast 3.98:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #2181df;
Background color
Panel with #2181df background
background-color: #2181df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #2181df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 129, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 129, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #2181df; background: linear-gradient(135deg, #2181df, #4021DF);