#B4301B#B4301B

#B4301B is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.172 H 31.8°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#B4301B
RGB	rgb(180, 48, 27)
HSL	hsl(8, 74%, 41%)
HSV	hsv(8, 85%, 71%)
CMYK	cmyk(0%, 73.3%, 85%, 29.4%)
CIE-LAB	lab(41.06, 51.86, 43.28)
CIE-LCH	lch(41.06, 67.54, 39.85°)
OKLab	oklab(51.17% 0.1461 0.0907)
OKLCH	oklch(51.17% 0.172 31.8)
XYZ	xyz(20.0796, 11.8995, 2.2763)
Luminance	0.1190 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4301B #1B9FB4

analogous

#B41B53 #B4301B #B47C1B

triadic

#B4301B #1BB430 #301BB4

tetradic

#B4301B #53B41B #1B9FB4 #7C1BB4

square

#B4301B #53B41B #1B9FB4 #7C1BB4

split-complementary

#B4301B #1BB47C #1B53B4

monochromatic

#4A140B #7F2213 #B4301B #DF452D #E77462

Accessibility & contrast

On white

6.21

#B4301B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B4301B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4301B

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4301B	#FFFFFF	#000000	##FFFFFF
##B4301B	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E17

Deuteranopia (green-blind)

#796B13

Tritanopia (blue-blind)

#C7002D

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b4301b;
/* rgb */ color: rgb(180, 48, 27);
/* oklch */ color: oklch(51.2% 0.172 31.8);

Tailwind

colors: {
  custom: {
    50: '#d4725a',
    500: '#b4301b',
    950: '#000000',
  },
}

SCSS

$custom: #b4301b;
$custom-light: #d4725a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4301b",
  "rgb": {
    "r": 180,
    "g": 48,
    "b": 27
  },
  "hsl": {
    "h": 8.235,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.51172,
    "c": 0.17199,
    "h": 31.8
  },
  "luminance": 0.11896
}

Semantic roles & 50–950 ramp

primary

#B4301B

secondary

#5FBDCC

accent

#D7F137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B4301B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →