#B5372B#B5372B

#B5372B is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.164 H 29.2°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#B5372B
RGB	rgb(181, 55, 43)
HSL	hsl(5, 62%, 44%)
HSV	hsv(5, 76%, 71%)
CMYK	cmyk(0%, 69.6%, 76.2%, 29%)
CIE-LAB	lab(42.36, 50.05, 36.16)
CIE-LCH	lch(42.36, 61.75, 35.85°)
OKLab	oklab(52.23% 0.1435 0.0803)
OKLCH	oklch(52.23% 0.164 29.2)
XYZ	xyz(20.8607, 12.7337, 3.6445)
Luminance	0.1273 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5372B #2BA9B5

analogous

#B52B64 #B5372B #B57C2B

triadic

#B5372B #2BB537 #372BB5

tetradic

#B5372B #64B52B #2BA9B5 #7C2BB5

square

#B5372B #64B52B #2BA9B5 #7C2BB5

split-complementary

#B5372B #2BB57C #2B64B5

monochromatic

#521914 #84281F #B5372B #D45549 #E0847B

Accessibility & contrast

On white

5.92

#B5372B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B5372B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5372B

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5372B	#FFFFFF	#000000	##FFFFFF
##B5372B	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)

#5B5229

Deuteranopia (green-blind)

#7B6E26

Tritanopia (blue-blind)

#C70A35

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b5372b;
/* rgb */ color: rgb(181, 55, 43);
/* oklch */ color: oklch(52.2% 0.164 29.2);

Tailwind

colors: {
  custom: {
    50: '#d47665',
    500: '#b5372b',
    950: '#000000',
  },
}

SCSS

$custom: #b5372b;
$custom-light: #d47665;
$custom-dark: #000000;

JSON

{
  "hex": "#b5372b",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 43
  },
  "hsl": {
    "h": 5.217,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.52228,
    "c": 0.16441,
    "h": 29.2
  },
  "luminance": 0.12731
}

Semantic roles & 50–950 ramp

primary

#B5372B

secondary

#74C0C8

accent

#D7E543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B5372B

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

Preview Lab → · Contrast checker → · Palette generator →