#B63D37#B63D37

#B63D37 is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.2% C 0.158 H 26.7°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B63D37
RGB	rgb(182, 61, 55)
HSL	hsl(3, 54%, 46%)
HSV	hsv(3, 70%, 71%)
CMYK	cmyk(0%, 66.5%, 69.8%, 28.6%)
CIE-LAB	lab(43.60, 48.48, 30.70)
CIE-LCH	lch(43.60, 57.39, 32.34°)
OKLab	oklab(53.24% 0.1409 0.0709)
OKLCH	oklch(53.24% 0.158 26.7)
XYZ	xyz(21.6520, 13.5615, 5.0912)
Luminance	0.1356 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63D37 #37B0B6

analogous

#B63771 #B63D37 #B67D37

triadic

#B63D37 #37B63D #3D37B6

tetradic

#B63D37 #71B637 #37B0B6 #7D37B6

square

#B63D37 #71B637 #37B0B6 #7D37B6

split-complementary

#B63D37 #37B67D #3771B6

monochromatic

#581D1B #872D29 #B63D37 #CE625C #DC8F8B

Accessibility & contrast

On white

5.66

#B63D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B63D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63D37

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63D37	#FFFFFF	#000000	##FFFFFF
##B63D37	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5635

Deuteranopia (green-blind)

#7C7133

Tritanopia (blue-blind)

#C81D3D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63d37;
/* rgb */ color: rgb(182, 61, 55);
/* oklch */ color: oklch(53.2% 0.158 26.7);

Tailwind

colors: {
  custom: {
    50: '#d3796e',
    500: '#b63d37',
    950: '#000000',
  },
}

SCSS

$custom: #b63d37;
$custom-light: #d3796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63d37",
  "rgb": {
    "r": 182,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.835,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53238,
    "c": 0.15771,
    "h": 26.7
  },
  "luminance": 0.13558
}

Semantic roles & 50–950 ramp

primary

#B63D37

secondary

#82C3C6

accent

#D6DD4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63D37

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

Preview Lab → · Contrast checker → · Palette generator →