#B63037#B63037

#B63037 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.9% C 0.170 H 22.8°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B63037
RGB	rgb(182, 48, 55)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 74%, 71%)
CMYK	cmyk(0%, 73.6%, 69.8%, 28.6%)
CIE-LAB	lab(41.75, 53.55, 28.49)
CIE-LCH	lch(41.75, 60.66, 28.01°)
OKLab	oklab(51.86% 0.1569 0.066)
OKLCH	oklch(51.86% 0.17 22.8)
XYZ	xyz(21.0403, 12.3380, 4.8873)
Luminance	0.1234 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63037 #30B6AF

analogous

#B6307A #B63037 #B66C30

triadic

#B63037 #37B630 #3037B6

tetradic

#B63037 #7AB630 #30B6AF #6C30B6

square

#B63037 #7AB630 #30B6AF #6C30B6

split-complementary

#B63037 #30B66C #307AB6

monochromatic

#55161A #862328 #B63037 #D15259 #DE8287

Accessibility & contrast

On white

6.06

#B63037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B63037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63037

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63037	#FFFFFF	#000000	##FFFFFF
##B63037	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575036

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C80034

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b63037;
/* rgb */ color: rgb(182, 48, 55);
/* oklch */ color: oklch(51.9% 0.170 22.8);

Tailwind

colors: {
  custom: {
    50: '#d4736e',
    500: '#b63037',
    950: '#000000',
  },
}

SCSS

$custom: #b63037;
$custom-light: #d4736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63037",
  "rgb": {
    "r": 182,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.866,
    "s": 58.261,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51857,
    "c": 0.17023,
    "h": 22.8
  },
  "luminance": 0.12335
}

Semantic roles & 50–950 ramp

primary

#B63037

secondary

#7BC7C3

accent

#E1D946

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63037

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

Preview Lab → · Contrast checker → · Palette generator →