#397cef
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 124, 239
HSL
218°, 85%, 58%
CMYK
76, 48, 0, 6
Luminance
0.2152
Every format
| HEX | #397cef |
| RGB | rgb(57, 124, 239) |
| HSL | hsl(218, 85%, 58%) |
| CMYK | cmyk(76%, 48%, 0%, 6%) |
| LAB | lab(53.5 18.5 -64.0) |
| LCH | lch(53.5 66.6 286.1) |
| OKLCH | oklch(0.605 0.186 260.5) |
Copy-ready code
/* CSS */
color: #397cef;
background-color: #397cef;
/* Tailwind (arbitrary) */
class="text-[#397cef] bg-[#397cef]"
/* SCSS */
$brand: #397cef;
/* SwiftUI */
Color(red: 0.224, green: 0.486, blue: 0.937)
/* Android */
Color.parseColor("#397cef")Accessibility — WCAG contrast
Aa
#397cef on white: 3.96:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#397cef on black: 5.30:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green48.6%
Blue93.7%
CMYK percentages
Cyan76.2%
Magenta48.1%
Yellow0.0%
Key (black)6.3%
Color previews
#397cef text on a black background
contrast 5.30:1
Card sample
#397cef text on a white background
contrast 3.96:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #397cef;
Background color
Panel with #397cef background
background-color: #397cef;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #397cef;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 124, 239, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 124, 239, 0.45);
Border & gradient
Gradient panel
border: 3px solid #397cef; background: linear-gradient(135deg, #397cef, #6F39EF);