#B4372B#B4372B

#B4372B is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.163 H 29.3°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B4372B
RGB	rgb(180, 55, 43)
HSL	hsl(5, 61%, 44%)
HSV	hsv(5, 76%, 71%)
CMYK	cmyk(0%, 69.4%, 76.1%, 29.4%)
CIE-LAB	lab(42.17, 49.72, 35.91)
CIE-LCH	lch(42.17, 61.33, 35.84°)
OKLab	oklab(52.06% 0.1425 0.0798)
OKLCH	oklch(52.06% 0.163 29.3)
XYZ	xyz(20.6270, 12.6132, 3.6335)
Luminance	0.1261 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4372B #2BA8B4

analogous

#B42B63 #B4372B #B47B2B

triadic

#B4372B #2BB437 #372BB4

tetradic

#B4372B #63B42B #2BA8B4 #7B2BB4

square

#B4372B #63B42B #2BA8B4 #7B2BB4

split-complementary

#B4372B #2BB47B #2B63B4

monochromatic

#511913 #83281F #B4372B #D35549 #DF837A

Accessibility & contrast

On white

5.96

#B4372B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B4372B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4372B

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4372B	#FFFFFF	#000000	##FFFFFF
##B4372B	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5229

Deuteranopia (green-blind)

#7A6E26

Tritanopia (blue-blind)

#C60B35

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b4372b;
/* rgb */ color: rgb(180, 55, 43);
/* oklch */ color: oklch(52.1% 0.163 29.3);

Tailwind

colors: {
  custom: {
    50: '#d37565',
    500: '#b4372b',
    950: '#000000',
  },
}

SCSS

$custom: #b4372b;
$custom-light: #d37565;
$custom-dark: #000000;

JSON

{
  "hex": "#b4372b",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 43
  },
  "hsl": {
    "h": 5.255,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52056,
    "c": 0.16335,
    "h": 29.3
  },
  "luminance": 0.1261
}

Semantic roles & 50–950 ramp

primary

#B4372B

secondary

#73C0C7

accent

#D6E543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B4372B

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

Preview Lab → · Contrast checker → · Palette generator →