#B4373D#B4373D

#B4373D is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.161 H 22.1°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B4373D
RGB	rgb(180, 55, 61)
HSL	hsl(357, 53%, 46%)
HSV	hsv(357, 69%, 71%)
CMYK	cmyk(0%, 69.4%, 66.1%, 29.4%)
CIE-LAB	lab(42.42, 50.61, 25.60)
CIE-LCH	lch(42.42, 56.71, 26.83°)
OKLab	oklab(52.32% 0.1491 0.0605)
OKLCH	oklch(52.32% 0.161 22.1)
XYZ	xyz(21.0331, 12.7756, 5.7724)
Luminance	0.1277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4373D #37B4AE

analogous

#B4377B #B4373D #B46F37

triadic

#B4373D #3DB437 #373DB4

tetradic

#B4373D #7BB437 #37B4AE #6F37B4

square

#B4373D #7BB437 #37B4AE #6F37B4

split-complementary

#B4373D #37B46F #377BB4

monochromatic

#561A1D #85292D #B4373D #CD5B61 #DB8A8E

Accessibility & contrast

On white

5.91

#B4373D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B4373D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4373D

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4373D	#FFFFFF	#000000	##FFFFFF
##B4373D	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)

#59533C

Deuteranopia (green-blind)

#796E39

Tritanopia (blue-blind)

#C6133A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b4373d;
/* rgb */ color: rgb(180, 55, 61);
/* oklch */ color: oklch(52.3% 0.161 22.1);

Tailwind

colors: {
  custom: {
    50: '#d27672',
    500: '#b4373d',
    950: '#000000',
  },
}

SCSS

$custom: #b4373d;
$custom-light: #d27672;
$custom-dark: #000000;

JSON

{
  "hex": "#b4373d",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 61
  },
  "hsl": {
    "h": 357.12,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52322,
    "c": 0.1609,
    "h": 22.1
  },
  "luminance": 0.12773
}

Semantic roles & 50–950 ramp

primary

#B4373D

secondary

#81C6C2

accent

#DDD64B

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B4373D

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

Preview Lab → · Contrast checker → · Palette generator →