#1f00df
a dark, electric blue · warm · closest name: blue
RGB
31, 0, 223
HSL
248°, 100%, 44%
CMYK
86, 100, 0, 13
Luminance
0.0562
Every format
| HEX | #1f00df |
| RGB | rgb(31, 0, 223) |
| HSL | hsl(248, 100%, 44%) |
| CMYK | cmyk(86%, 100%, 0%, 13%) |
| LAB | lab(28.4 71.8 -96.1) |
| LCH | lch(28.4 120.0 306.8) |
| OKLCH | oklch(0.416 0.278 267.9) |
Copy-ready code
/* CSS */
color: #1f00df;
background-color: #1f00df;
/* Tailwind (arbitrary) */
class="text-[#1f00df] bg-[#1f00df]"
/* SCSS */
$brand: #1f00df;
/* SwiftUI */
Color(red: 0.122, green: 0.000, blue: 0.875)
/* Android */
Color.parseColor("#1f00df")Accessibility — WCAG contrast
Aa
#1f00df on white: 9.89:1
AA ✓ pass · AA-large ✓ · AAA ✓
Aa
#1f00df on black: 2.12:1
AA ✗ fail · AA-large ✗ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red12.2%
Green0.0%
Blue87.5%
CMYK percentages
Cyan86.1%
Magenta100.0%
Yellow0.0%
Key (black)12.5%
Color previews
#1f00df text on a black background
contrast 2.12:1
Card sample
#1f00df text on a white background
contrast 9.89:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #1f00df;
Background color
Panel with #1f00df background
background-color: #1f00df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #1f00df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(31, 0, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(31, 0, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #1f00df; background: linear-gradient(135deg, #1f00df, #B300DF);