#155cd3
a balanced, electric blue · cool · closest name: royalblue
RGB
21, 92, 211
HSL
218°, 82%, 46%
CMYK
90, 56, 0, 17
Luminance
0.1252
Every format
| HEX | #155cd3 |
| RGB | rgb(21, 92, 211) |
| HSL | hsl(218, 82%, 46%) |
| CMYK | cmyk(90%, 56%, 0%, 17%) |
| LAB | lab(42.0 25.3 -66.8) |
| LCH | lch(42.0 71.4 290.8) |
| OKLCH | oklch(0.509 0.196 260.7) |
Copy-ready code
/* CSS */
color: #155cd3;
background-color: #155cd3;
/* Tailwind (arbitrary) */
class="text-[#155cd3] bg-[#155cd3]"
/* SCSS */
$brand: #155cd3;
/* SwiftUI */
Color(red: 0.082, green: 0.361, blue: 0.827)
/* Android */
Color.parseColor("#155cd3")Accessibility — WCAG contrast
Aa
#155cd3 on white: 5.99:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#155cd3 on black: 3.50:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red8.2%
Green36.1%
Blue82.7%
CMYK percentages
Cyan90.0%
Magenta56.4%
Yellow0.0%
Key (black)17.3%
Color previews
#155cd3 text on a black background
contrast 3.50:1
Card sample
#155cd3 text on a white background
contrast 5.99:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #155cd3;
Background color
Panel with #155cd3 background
background-color: #155cd3;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #155cd3;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(21, 92, 211, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(21, 92, 211, 0.45);
Border & gradient
Gradient panel
border: 3px solid #155cd3; background: linear-gradient(135deg, #155cd3, #4D15D3);