#3957eb
a balanced, electric blue · warm · closest name: royalblue
RGB
57, 87, 235
HSL
230°, 82%, 57%
CMYK
76, 63, 0, 8
Luminance
0.1368
Every format
| HEX | #3957eb |
| RGB | rgb(57, 87, 235) |
| HSL | hsl(230, 82%, 57%) |
| CMYK | cmyk(76%, 63%, 0%, 8%) |
| LAB | lab(43.8 40.2 -77.5) |
| LCH | lch(43.8 87.3 297.4) |
| OKLCH | oklch(0.531 0.224 268.4) |
Copy-ready code
/* CSS */
color: #3957eb;
background-color: #3957eb;
/* Tailwind (arbitrary) */
class="text-[#3957eb] bg-[#3957eb]"
/* SCSS */
$brand: #3957eb;
/* SwiftUI */
Color(red: 0.224, green: 0.341, blue: 0.922)
/* Android */
Color.parseColor("#3957eb")Accessibility — WCAG contrast
Aa
#3957eb on white: 5.62:1
AA ✓ pass · AA-large ✓ · AAA ✗
Aa
#3957eb on black: 3.74:1
AA ✗ fail · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green34.1%
Blue92.2%
CMYK percentages
Cyan75.7%
Magenta63.0%
Yellow0.0%
Key (black)7.8%
Color previews
#3957eb text on a black background
contrast 3.74:1
Card sample
#3957eb text on a white background
contrast 5.62:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3957eb;
Background color
Panel with #3957eb background
background-color: #3957eb;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3957eb;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 87, 235, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 87, 235, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3957eb; background: linear-gradient(135deg, #3957eb, #9239EB);