#218cd3
a balanced, vivid blue · cool · closest name: steelblue
RGB
33, 140, 211
HSL
204°, 73%, 48%
CMYK
84, 34, 0, 17
Luminance
0.2378
Every format
| HEX | #218cd3 |
| RGB | rgb(33, 140, 211) |
| HSL | hsl(204, 73%, 48%) |
| CMYK | cmyk(84%, 34%, 0%, 17%) |
| LAB | lab(55.9 -3.9 -44.5) |
| LCH | lch(55.9 44.7 265.0) |
| OKLCH | oklch(0.617 0.141 244.1) |
Copy-ready code
/* CSS */
color: #218cd3;
background-color: #218cd3;
/* Tailwind (arbitrary) */
class="text-[#218cd3] bg-[#218cd3]"
/* SCSS */
$brand: #218cd3;
/* SwiftUI */
Color(red: 0.129, green: 0.549, blue: 0.827)
/* Android */
Color.parseColor("#218cd3")Accessibility — WCAG contrast
Aa
#218cd3 on white: 3.65:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#218cd3 on black: 5.76:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.9%
Green54.9%
Blue82.7%
CMYK percentages
Cyan84.4%
Magenta33.6%
Yellow0.0%
Key (black)17.3%
Color previews
#218cd3 text on a black background
contrast 5.76:1
Card sample
#218cd3 text on a white background
contrast 3.65:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #218cd3;
Background color
Panel with #218cd3 background
background-color: #218cd3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #218cd3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(33, 140, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(33, 140, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #218cd3; background: linear-gradient(135deg, #218cd3, #2C21D3);