#B73031#B73031

#B73031 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.172 H 25.2°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B73031
RGB	rgb(183, 48, 49)
HSL	hsl(360, 58%, 45%)
HSV	hsv(360, 74%, 72%)
CMYK	cmyk(0%, 73.8%, 73.2%, 28.2%)
CIE-LAB	lab(41.85, 53.58, 32.25)
CIE-LCH	lch(41.85, 62.53, 31.04°)
OKLab	oklab(51.94% 0.1556 0.0731)
OKLCH	oklch(51.94% 0.172 25.2)
XYZ	xyz(21.1422, 12.4062, 4.1865)
Luminance	0.1240 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73031 #30B7B6

analogous

#B73074 #B73031 #B77330

triadic

#B73031 #31B730 #3031B7

tetradic

#B73031 #74B730 #30B7B6 #7330B7

square

#B73031 #74B730 #30B7B6 #7330B7

split-complementary

#B73031 #30B773 #3074B7

monochromatic

#561717 #872324 #B73031 #D25253 #DE8384

Accessibility & contrast

On white

6.03

#B73031 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B73031 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73031

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73031	#FFFFFF	#000000	##FFFFFF
##B73031	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585030

Deuteranopia (green-blind)

#796D2C

Tritanopia (blue-blind)

#C90032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b73031;
/* rgb */ color: rgb(183, 48, 49);
/* oklch */ color: oklch(51.9% 0.172 25.2);

Tailwind

colors: {
  custom: {
    50: '#d57369',
    500: '#b73031',
    950: '#000000',
  },
}

SCSS

$custom: #b73031;
$custom-light: #d57369;
$custom-dark: #000000;

JSON

{
  "hex": "#b73031",
  "rgb": {
    "r": 183,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.556,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51943,
    "c": 0.17189,
    "h": 25.2
  },
  "luminance": 0.12403
}

Semantic roles & 50–950 ramp

primary

#B73031

secondary

#7BC8C7

accent

#E2E146

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73031

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

Preview Lab → · Contrast checker → · Palette generator →