#B5372D#B5372D

#B5372D is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.164 H 28.6°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#B5372D
RGB	rgb(181, 55, 45)
HSL	hsl(4, 60%, 44%)
HSV	hsv(4, 75%, 71%)
CMYK	cmyk(0%, 69.6%, 75.1%, 29%)
CIE-LAB	lab(42.38, 50.13, 35.06)
CIE-LCH	lch(42.38, 61.18, 34.96°)
OKLab	oklab(52.25% 0.1441 0.0784)
OKLCH	oklch(52.25% 0.164 28.6)
XYZ	xyz(20.8982, 12.7487, 3.8425)
Luminance	0.1275 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5372D #2DABB5

analogous

#B52D67 #B5372D #B57B2D

triadic

#B5372D #2DB537 #372DB5

tetradic

#B5372D #67B52D #2DABB5 #7B2DB5

square

#B5372D #67B52D #2DABB5 #7B2DB5

split-complementary

#B5372D #2DB57B #2D67B5

monochromatic

#531915 #842821 #B5372D #D3564D #DF857E

Accessibility & contrast

On white

5.92

#B5372D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B5372D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5372D

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5372D	#FFFFFF	#000000	##FFFFFF
##B5372D	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532B

Deuteranopia (green-blind)

#7B6E28

Tritanopia (blue-blind)

#C70B36

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b5372d;
/* rgb */ color: rgb(181, 55, 45);
/* oklch */ color: oklch(52.3% 0.164 28.6);

Tailwind

colors: {
  custom: {
    50: '#d37667',
    500: '#b5372d',
    950: '#000000',
  },
}

SCSS

$custom: #b5372d;
$custom-light: #d37667;
$custom-dark: #000000;

JSON

{
  "hex": "#b5372d",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 45
  },
  "hsl": {
    "h": 4.412,
    "s": 60.177,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52253,
    "c": 0.16407,
    "h": 28.6
  },
  "luminance": 0.12746
}

Semantic roles & 50–950 ramp

primary

#B5372D

secondary

#76C1C7

accent

#D8E344

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B5372D

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

Preview Lab → · Contrast checker → · Palette generator →