#B3231E#B3231E

#B3231E is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.9% C 0.180 H 28.1°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#B3231E
RGB	rgb(179, 35, 30)
HSL	hsl(2, 71%, 41%)
HSV	hsv(2, 83%, 70%)
CMYK	cmyk(0%, 80.4%, 83.2%, 29.8%)
CIE-LAB	lab(39.38, 55.82, 40.15)
CIE-LCH	lch(39.38, 68.76, 35.73°)
OKLab	oklab(49.9% 0.1592 0.085)
OKLCH	oklch(49.9% 0.18 28.1)
XYZ	xyz(19.4282, 10.8827, 2.3057)
Luminance	0.1088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3231E #1EAEB3

analogous

#B31E64 #B3231E #B36D1E

triadic

#B3231E #1EB323 #231EB3

tetradic

#B3231E #64B31E #1EAEB3 #6D1EB3

square

#B3231E #64B31E #1EAEB3 #6D1EB3

split-complementary

#B3231E #1EB36D #1E64B3

monochromatic

#4A0F0C #7F1915 #B3231E #DD3732 #E56A66

Accessibility & contrast

On white

6.61

#B3231E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#B3231E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3231E

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3231E	#FFFFFF	#000000	##FFFFFF
##B3231E	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52491B

Deuteranopia (green-blind)

#756816

Tritanopia (blue-blind)

#C60024

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b3231e;
/* rgb */ color: rgb(179, 35, 30);
/* oklch */ color: oklch(49.9% 0.180 28.1);

Tailwind

colors: {
  custom: {
    50: '#d46c5b',
    500: '#b3231e',
    950: '#000000',
  },
}

SCSS

$custom: #b3231e;
$custom-light: #d46c5b;
$custom-dark: #000000;

JSON

{
  "hex": "#b3231e",
  "rgb": {
    "r": 179,
    "g": 35,
    "b": 30
  },
  "hsl": {
    "h": 2.013,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49897,
    "c": 0.18042,
    "h": 28.1
  },
  "luminance": 0.1088
}

Semantic roles & 50–950 ramp

primary

#B3231E

secondary

#62C7CB

accent

#E8EE3A

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B3231E

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

Preview Lab → · Contrast checker → · Palette generator →