#B5372E#B5372E

#B5372E is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.164 H 28.2°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B5372E
RGB	rgb(181, 55, 46)
HSL	hsl(4, 59%, 45%)
HSV	hsv(4, 75%, 71%)
CMYK	cmyk(0%, 69.6%, 74.6%, 29%)
CIE-LAB	lab(42.39, 50.18, 34.50)
CIE-LCH	lch(42.39, 60.89, 34.51°)
OKLab	oklab(52.27% 0.1445 0.0774)
OKLCH	oklch(52.27% 0.164 28.2)
XYZ	xyz(20.9177, 12.7565, 3.9451)
Luminance	0.1275 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5372E #2EACB5

analogous

#B52E69 #B5372E #B57B2E

triadic

#B5372E #2EB537 #372EB5

tetradic

#B5372E #69B52E #2EACB5 #7B2EB5

square

#B5372E #69B52E #2EACB5 #7B2EB5

split-complementary

#B5372E #2EB57B #2E69B5

monochromatic

#531915 #842822 #B5372E #D2574E #DE857F

Accessibility & contrast

On white

5.91

#B5372E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B5372E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5372E

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5372E	#FFFFFF	#000000	##FFFFFF
##B5372E	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532C

Deuteranopia (green-blind)

#7B6E29

Tritanopia (blue-blind)

#C70B36

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b5372e;
/* rgb */ color: rgb(181, 55, 46);
/* oklch */ color: oklch(52.3% 0.164 28.2);

Tailwind

colors: {
  custom: {
    50: '#d37667',
    500: '#b5372e',
    950: '#000000',
  },
}

SCSS

$custom: #b5372e;
$custom-light: #d37667;
$custom-dark: #000000;

JSON

{
  "hex": "#b5372e",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 46
  },
  "hsl": {
    "h": 4,
    "s": 59.471,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52266,
    "c": 0.16391,
    "h": 28.2
  },
  "luminance": 0.12753
}

Semantic roles & 50–950 ramp

primary

#B5372E

secondary

#78C2C7

accent

#D8E345

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B5372E

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

Preview Lab → · Contrast checker → · Palette generator →