#B4373E#B4373E

#B4373E is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.161 H 21.6°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B4373E
RGB	rgb(180, 55, 62)
HSL	hsl(357, 53%, 46%)
HSV	hsv(357, 69%, 71%)
CMYK	cmyk(0%, 69.4%, 65.6%, 29.4%)
CIE-LAB	lab(42.44, 50.66, 25.01)
CIE-LCH	lch(42.44, 56.50, 26.27°)
OKLab	oklab(52.34% 0.1495 0.0593)
OKLCH	oklch(52.34% 0.161 21.6)
XYZ	xyz(21.0603, 12.7865, 5.9156)
Luminance	0.1278 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4373E #37B4AD

analogous

#B4377C #B4373E #B46E37

triadic

#B4373E #3EB437 #373EB4

tetradic

#B4373E #7CB437 #37B4AD #6E37B4

square

#B4373E #7CB437 #37B4AD #6E37B4

split-complementary

#B4373E #37B46E #377CB4

monochromatic

#561A1E #85292E #B4373E #CD5B62 #DB8A8F

Accessibility & contrast

On white

5.90

#B4373E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B4373E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4373E

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4373E	#FFFFFF	#000000	##FFFFFF
##B4373E	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59533D

Deuteranopia (green-blind)

#796E3A

Tritanopia (blue-blind)

#C5143B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b4373e;
/* rgb */ color: rgb(180, 55, 62);
/* oklch */ color: oklch(52.3% 0.161 21.6);

Tailwind

colors: {
  custom: {
    50: '#d27673',
    500: '#b4373e',
    950: '#000000',
  },
}

SCSS

$custom: #b4373e;
$custom-light: #d27673;
$custom-dark: #000000;

JSON

{
  "hex": "#b4373e",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 62
  },
  "hsl": {
    "h": 356.64,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5234,
    "c": 0.16081,
    "h": 21.6
  },
  "luminance": 0.12783
}

Semantic roles & 50–950 ramp

primary

#B4373E

secondary

#81C6C2

accent

#DDD44B

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B4373E

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

Preview Lab → · Contrast checker → · Palette generator →