#283fdf
a balanced, vivid blue · warm · closest name: slateblue
RGB
40, 63, 223
HSL
233°, 74%, 52%
CMYK
82, 72, 0, 13
Luminance
0.0933
Every format
| HEX | #283fdf |
| RGB | rgb(40, 63, 223) |
| HSL | hsl(233, 74%, 52%) |
| CMYK | cmyk(82%, 72%, 0%, 13%) |
| LAB | lab(36.6 49.1 -82.5) |
| LCH | lch(36.6 96.0 300.8) |
| OKLCH | oklch(0.474 0.239 267.9) |
Copy-ready code
/* CSS */
color: #283fdf;
background-color: #283fdf;
/* Tailwind (arbitrary) */
class="text-[#283fdf] bg-[#283fdf]"
/* SCSS */
$brand: #283fdf;
/* SwiftUI */
Color(red: 0.157, green: 0.247, blue: 0.875)
/* Android */
Color.parseColor("#283fdf")Accessibility — WCAG contrast
Aa
#283fdf on white: 7.33:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#283fdf on black: 2.87:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red15.7%
Green24.7%
Blue87.5%
CMYK percentages
Cyan82.1%
Magenta71.7%
Yellow0.0%
Key (black)12.5%
Color previews
#283fdf text on a black background
contrast 2.87:1
Card sample
#283fdf text on a white background
contrast 7.33:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #283fdf;
Background color
Panel with #283fdf background
background-color: #283fdf;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #283fdf;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(40, 63, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(40, 63, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #283fdf; background: linear-gradient(135deg, #283fdf, #8B28DF);