#B3231D#B3231D

#B3231D is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.9% C 0.181 H 28.4°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#B3231D
RGB	rgb(179, 35, 29)
HSL	hsl(2, 72%, 41%)
HSV	hsv(2, 84%, 70%)
CMYK	cmyk(0%, 80.4%, 83.8%, 29.8%)
CIE-LAB	lab(39.37, 55.79, 40.67)
CIE-LCH	lch(39.37, 69.04, 36.09°)
OKLab	oklab(49.89% 0.1589 0.0858)
OKLCH	oklch(49.89% 0.181 28.4)
XYZ	xyz(19.4156, 10.8777, 2.2395)
Luminance	0.1087 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3231D #1DADB3

analogous

#B31D62 #B3231D #B36E1D

triadic

#B3231D #1DB323 #231DB3

tetradic

#B3231D #62B31D #1DADB3 #6E1DB3

square

#B3231D #62B31D #1DADB3 #6E1DB3

split-complementary

#B3231D #1DB36E #1D62B3

monochromatic

#4A0E0C #7E1914 #B3231D #DD3730 #E66A64

Accessibility & contrast

On white

6.61

#B3231D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#B3231D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3231D

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3231D	#FFFFFF	#000000	##FFFFFF
##B3231D	1.00	6.61	3.17	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52491A

Deuteranopia (green-blind)

#756815

Tritanopia (blue-blind)

#C60024

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b3231d;
/* rgb */ color: rgb(179, 35, 29);
/* oklch */ color: oklch(49.9% 0.181 28.4);

Tailwind

colors: {
  custom: {
    50: '#d46c5b',
    500: '#b3231d',
    950: '#000000',
  },
}

SCSS

$custom: #b3231d;
$custom-light: #d46c5b;
$custom-dark: #000000;

JSON

{
  "hex": "#b3231d",
  "rgb": {
    "r": 179,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 2.4,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.49888,
    "c": 0.18053,
    "h": 28.4
  },
  "luminance": 0.10874
}

Semantic roles & 50–950 ramp

primary

#B3231D

secondary

#61C7CB

accent

#E8EF39

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B3231D

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

Preview Lab → · Contrast checker → · Palette generator →