#3f91cb
a balanced, vivid blue · cool · closest name: steelblue
RGB
63, 145, 203
HSL
205°, 57%, 52%
CMYK
69, 29, 0, 20
Luminance
0.2562
Every format
| HEX | #3f91cb |
| RGB | rgb(63, 145, 203) |
| HSL | hsl(205, 57%, 52%) |
| CMYK | cmyk(69%, 29%, 0%, 20%) |
| LAB | lab(57.7 -6.2 -37.1) |
| LCH | lch(57.7 37.7 260.5) |
| OKLCH | oklch(0.632 0.118 242.7) |
Copy-ready code
/* CSS */
color: #3f91cb;
background-color: #3f91cb;
/* Tailwind (arbitrary) */
class="text-[#3f91cb] bg-[#3f91cb]"
/* SCSS */
$brand: #3f91cb;
/* SwiftUI */
Color(red: 0.247, green: 0.569, blue: 0.796)
/* Android */
Color.parseColor("#3f91cb")Accessibility — WCAG contrast
Aa
#3f91cb on white: 3.43:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3f91cb on black: 6.12:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red24.7%
Green56.9%
Blue79.6%
CMYK percentages
Cyan69.0%
Magenta28.6%
Yellow0.0%
Key (black)20.4%
Color previews
#3f91cb text on a black background
contrast 6.12:1
Card sample
#3f91cb text on a white background
contrast 3.43:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3f91cb;
Background color
Panel with #3f91cb background
background-color: #3f91cb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3f91cb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(63, 145, 203, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(63, 145, 203, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3f91cb; background: linear-gradient(135deg, #3f91cb, #4B3FCB);