#3979ff
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 121, 255
HSL
221°, 100%, 61%
CMYK
78, 53, 0, 0
Luminance
0.2176
Every format
| HEX | #3979ff |
| RGB | rgb(57, 121, 255) |
| HSL | hsl(221, 100%, 61%) |
| CMYK | cmyk(78%, 53%, 0%, 0%) |
| LAB | lab(53.8 26.2 -72.4) |
| LCH | lch(53.8 77.0 289.9) |
| OKLCH | oklch(0.611 0.210 262.7) |
Copy-ready code
/* CSS */
color: #3979ff;
background-color: #3979ff;
/* Tailwind (arbitrary) */
class="text-[#3979ff] bg-[#3979ff]"
/* SCSS */
$brand: #3979ff;
/* SwiftUI */
Color(red: 0.224, green: 0.475, blue: 1.000)
/* Android */
Color.parseColor("#3979ff")Accessibility — WCAG contrast
Aa
#3979ff on white: 3.92:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3979ff on black: 5.35:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green47.5%
Blue100.0%
CMYK percentages
Cyan77.6%
Magenta52.5%
Yellow0.0%
Key (black)0.0%
Color previews
#3979ff text on a black background
contrast 5.35:1
Card sample
#3979ff text on a white background
contrast 3.92:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3979ff;
Background color
Panel with #3979ff background
background-color: #3979ff;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3979ff;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 121, 255, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 121, 255, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3979ff; background: linear-gradient(135deg, #3979ff, #7D39FF);