#B3331A#B3331A

#B3331A is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.169 H 33.0°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B3331A
RGB	rgb(179, 51, 26)
HSL	hsl(10, 75%, 40%)
HSV	hsv(10, 85%, 70%)
CMYK	cmyk(0%, 71.5%, 85.5%, 29.8%)
CIE-LAB	lab(41.26, 50.39, 43.86)
CIE-LCH	lch(41.26, 66.81, 41.04°)
OKLab	oklab(51.29% 0.1415 0.0917)
OKLCH	oklch(51.29% 0.169 33)
XYZ	xyz(19.9631, 12.0290, 2.2478)
Luminance	0.1203 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3331A #1A9AB3

analogous

#B31A4D #B3331A #B37F1A

triadic

#B3331A #1AB333 #331AB3

tetradic

#B3331A #4DB31A #1A9AB3 #7F1AB3

square

#B3331A #4DB31A #1A9AB3 #7F1AB3

split-complementary

#B3331A #1AB37F #1A4DB3

monochromatic

#48150A #7E2412 #B3331A #E0482A #E87660

Accessibility & contrast

On white

6.17

#B3331A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B3331A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3331A

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3331A	#FFFFFF	#000000	##FFFFFF
##B3331A	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A4F15

Deuteranopia (green-blind)

#796C12

Tritanopia (blue-blind)

#C6002F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3331a;
/* rgb */ color: rgb(179, 51, 26);
/* oklch */ color: oklch(51.3% 0.169 33.0);

Tailwind

colors: {
  custom: {
    50: '#d3735a',
    500: '#b3331a',
    950: '#000000',
  },
}

SCSS

$custom: #b3331a;
$custom-light: #d3735a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3331a",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 26
  },
  "hsl": {
    "h": 9.804,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5129,
    "c": 0.16865,
    "h": 33
  },
  "luminance": 0.12026
}

Semantic roles & 50–950 ramp

primary

#B3331A

secondary

#5DBACC

accent

#D3F137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B3331A

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

Preview Lab → · Contrast checker → · Palette generator →