#B63E37#B63E37

#B63E37 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.4% C 0.157 H 27.1°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#B63E37
RGB	rgb(182, 62, 55)
HSL	hsl(3, 54%, 46%)
HSV	hsv(3, 70%, 71%)
CMYK	cmyk(0%, 65.9%, 69.8%, 28.6%)
CIE-LAB	lab(43.75, 48.06, 30.89)
CIE-LCH	lch(43.75, 57.13, 32.73°)
OKLab	oklab(53.36% 0.1395 0.0713)
OKLCH	oklch(53.36% 0.157 27.1)
XYZ	xyz(21.7059, 13.6693, 5.1092)
Luminance	0.1367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63E37 #37AFB6

analogous

#B63770 #B63E37 #B67E37

triadic

#B63E37 #37B63E #3E37B6

tetradic

#B63E37 #70B637 #37AFB6 #7E37B6

square

#B63E37 #70B637 #37AFB6 #7E37B6

split-complementary

#B63E37 #37B67E #3770B6

monochromatic

#581E1B #872E29 #B63E37 #CE635C #DC908B

Accessibility & contrast

On white

5.63

#B63E37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#B63E37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63E37

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63E37	#FFFFFF	#000000	##FFFFFF
##B63E37	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5735

Deuteranopia (green-blind)

#7D7133

Tritanopia (blue-blind)

#C81F3D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63e37;
/* rgb */ color: rgb(182, 62, 55);
/* oklch */ color: oklch(53.4% 0.157 27.1);

Tailwind

colors: {
  custom: {
    50: '#d37a6e',
    500: '#b63e37',
    950: '#000000',
  },
}

SCSS

$custom: #b63e37;
$custom-light: #d37a6e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63e37",
  "rgb": {
    "r": 182,
    "g": 62,
    "b": 55
  },
  "hsl": {
    "h": 3.307,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53356,
    "c": 0.15671,
    "h": 27.1
  },
  "luminance": 0.13666
}

Semantic roles & 50–950 ramp

primary

#B63E37

secondary

#82C3C6

accent

#D5DD4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #B63E37

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

Preview Lab → · Contrast checker → · Palette generator →