#B73840#B73840

#B73840 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.163 H 21.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B73840
RGB	rgb(183, 56, 64)
HSL	hsl(356, 53%, 47%)
HSV	hsv(356, 69%, 72%)
CMYK	cmyk(0%, 69.4%, 65%, 28.2%)
CIE-LAB	lab(43.17, 51.37, 24.82)
CIE-LCH	lch(43.17, 57.05, 25.79°)
OKLab	oklab(52.99% 0.1517 0.059)
OKLCH	oklch(52.99% 0.163 21.3)
XYZ	xyz(21.8703, 13.2689, 6.2590)
Luminance	0.1327 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73840 #38B7AF

analogous

#B73880 #B73840 #B76F38

triadic

#B73840 #40B738 #3840B7

tetradic

#B73840 #80B738 #38B7AF #6F38B7

square

#B73840 #80B738 #38B7AF #6F38B7

split-complementary

#B73840 #38B76F #3880B7

monochromatic

#591B1F #882A30 #B73840 #CE5E65 #DC8D92

Accessibility & contrast

On white

5.75

#B73840 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B73840 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73840

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73840	#FFFFFF	#000000	##FFFFFF
##B73840	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A553F

Deuteranopia (green-blind)

#7A703C

Tritanopia (blue-blind)

#C9153C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73840;
/* rgb */ color: rgb(183, 56, 64);
/* oklch */ color: oklch(53.0% 0.163 21.3);

Tailwind

colors: {
  custom: {
    50: '#d47774',
    500: '#b73840',
    950: '#000000',
  },
}

SCSS

$custom: #b73840;
$custom-light: #d47774;
$custom-dark: #000000;

JSON

{
  "hex": "#b73840",
  "rgb": {
    "r": 183,
    "g": 56,
    "b": 64
  },
  "hsl": {
    "h": 356.22,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52994,
    "c": 0.1628,
    "h": 21.3
  },
  "luminance": 0.13266
}

Semantic roles & 50–950 ramp

primary

#B73840

secondary

#84C7C3

accent

#DDD34B

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #B73840

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

Preview Lab → · Contrast checker → · Palette generator →