#B7373F#B7373F

#B7373F is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.164 H 21.4°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B7373F
RGB	rgb(183, 55, 63)
HSL	hsl(356, 54%, 47%)
HSV	hsv(356, 70%, 72%)
CMYK	cmyk(0%, 69.9%, 65.6%, 28.2%)
CIE-LAB	lab(43.01, 51.70, 25.23)
CIE-LCH	lch(43.01, 57.53, 26.01°)
OKLab	oklab(52.87% 0.1526 0.0598)
OKLCH	oklch(52.87% 0.164 21.4)
XYZ	xyz(21.7941, 13.1617, 6.0945)
Luminance	0.1316 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B7373F #37B7AF

analogous

#B7377F #B7373F #B76F37

triadic

#B7373F #3FB737 #373FB7

tetradic

#B7373F #7FB737 #37B7AF #6F37B7

square

#B7373F #7FB737 #37B7AF #6F37B7

split-complementary

#B7373F #37B76F #377FB7

monochromatic

#591B1F #88292F #B7373F #CE5D64 #DC8C91

Accessibility & contrast

On white

5.78

#B7373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B7373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B7373F

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B7373F	#FFFFFF	#000000	##FFFFFF
##B7373F	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A543E

Deuteranopia (green-blind)

#7A703B

Tritanopia (blue-blind)

#C9113B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b7373f;
/* rgb */ color: rgb(183, 55, 63);
/* oklch */ color: oklch(52.9% 0.164 21.4);

Tailwind

colors: {
  custom: {
    50: '#d47674',
    500: '#b7373f',
    950: '#000000',
  },
}

SCSS

$custom: #b7373f;
$custom-light: #d47674;
$custom-dark: #000000;

JSON

{
  "hex": "#b7373f",
  "rgb": {
    "r": 183,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 356.25,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52869,
    "c": 0.16389,
    "h": 21.4
  },
  "luminance": 0.13159
}

Semantic roles & 50–950 ramp

primary

#B7373F

secondary

#83C7C3

accent

#DDD44B

background

#FEF7F7

surface

#FCEDED

border

#D5C8C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #B7373F

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

Preview Lab → · Contrast checker → · Palette generator →