#B4331A#B4331A

#B4331A is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.170 H 32.9°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#B4331A
RGB	rgb(180, 51, 26)
HSL	hsl(10, 75%, 40%)
HSV	hsv(10, 86%, 71%)
CMYK	cmyk(0%, 71.7%, 85.6%, 29.4%)
CIE-LAB	lab(41.45, 50.72, 44.10)
CIE-LCH	lch(41.45, 67.21, 41.00°)
OKLab	oklab(51.47% 0.1425 0.0922)
OKLCH	oklch(51.47% 0.17 32.9)
XYZ	xyz(20.1951, 12.1487, 2.2587)
Luminance	0.1215 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4331A #1A9BB4

analogous

#B41A4E #B4331A #B4801A

triadic

#B4331A #1AB433 #331AB4

tetradic

#B4331A #4EB41A #1A9BB4 #801AB4

square

#B4331A #4EB41A #1A9BB4 #801AB4

split-complementary

#B4331A #1AB480 #1A4EB4

monochromatic

#49150B #7F2412 #B4331A #E0482B #E87660

Accessibility & contrast

On white

6.12

#B4331A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B4331A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4331A

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4331A	#FFFFFF	#000000	##FFFFFF
##B4331A	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5015

Deuteranopia (green-blind)

#7A6C12

Tritanopia (blue-blind)

#C7002F

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4331a;
/* rgb */ color: rgb(180, 51, 26);
/* oklch */ color: oklch(51.5% 0.170 32.9);

Tailwind

colors: {
  custom: {
    50: '#d4735a',
    500: '#b4331a',
    950: '#000000',
  },
}

SCSS

$custom: #b4331a;
$custom-light: #d4735a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4331a",
  "rgb": {
    "r": 180,
    "g": 51,
    "b": 26
  },
  "hsl": {
    "h": 9.74,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.51466,
    "c": 0.16967,
    "h": 32.9
  },
  "luminance": 0.12146
}

Semantic roles & 50–950 ramp

primary

#B4331A

secondary

#5DBACC

accent

#D3F136

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4331A

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

Preview Lab → · Contrast checker → · Palette generator →