#B63B27#B63B27

#B63B27 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.163 H 31.8°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#B63B27
RGB	rgb(182, 59, 39)
HSL	hsl(8, 65%, 43%)
HSV	hsv(8, 79%, 71%)
CMYK	cmyk(0%, 67.6%, 78.6%, 28.6%)
CIE-LAB	lab(43.10, 48.61, 39.20)
CIE-LCH	lch(43.10, 62.45, 38.88°)
OKLab	oklab(52.8% 0.1381 0.0857)
OKLCH	oklch(52.8% 0.163 31.8)
XYZ	xyz(21.2240, 13.2226, 3.3537)
Luminance	0.1322 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63B27 #27A2B6

analogous

#B6275A #B63B27 #B68227

triadic

#B63B27 #27B63B #3B27B6

tetradic

#B63B27 #5AB627 #27A2B6 #8227B6

square

#B63B27 #5AB627 #27A2B6 #8227B6

split-complementary

#B63B27 #27B682 #275AB6

monochromatic

#511A11 #842B1C #B63B27 #D75843 #E28576

Accessibility & contrast

On white

5.76

#B63B27 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B63B27 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63B27

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63B27	#FFFFFF	#000000	##FFFFFF
##B63B27	1.00	5.76	3.64	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5524

Deuteranopia (green-blind)

#7D7022

Tritanopia (blue-blind)

#C81437

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b63b27;
/* rgb */ color: rgb(182, 59, 39);
/* oklch */ color: oklch(52.8% 0.163 31.8);

Tailwind

colors: {
  custom: {
    50: '#d47863',
    500: '#b63b27',
    950: '#000000',
  },
}

SCSS

$custom: #b63b27;
$custom-light: #d47863;
$custom-dark: #000000;

JSON

{
  "hex": "#b63b27",
  "rgb": {
    "r": 182,
    "g": 59,
    "b": 39
  },
  "hsl": {
    "h": 8.392,
    "s": 64.706,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52802,
    "c": 0.1625,
    "h": 31.8
  },
  "luminance": 0.13219
}

Semantic roles & 50–950 ramp

primary

#B63B27

secondary

#70BDC9

accent

#D0E840

background

#FEF7F5

surface

#FCEEEA

border

#D5C9C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B63B27

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

Preview Lab → · Contrast checker → · Palette generator →