#B63337#B63337

#B63337 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.167 H 23.6°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#B63337
RGB	rgb(182, 51, 55)
HSL	hsl(358, 56%, 46%)
HSV	hsv(358, 72%, 71%)
CMYK	cmyk(0%, 72%, 69.8%, 28.6%)
CIE-LAB	lab(42.14, 52.46, 28.96)
CIE-LCH	lch(42.14, 59.92, 28.90°)
OKLab	oklab(52.15% 0.1535 0.0671)
OKLCH	oklch(52.15% 0.167 23.6)
XYZ	xyz(21.1671, 12.5917, 4.9296)
Luminance	0.1259 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63337 #33B6B2

analogous

#B63378 #B63337 #B67033

triadic

#B63337 #37B633 #3337B6

tetradic

#B63337 #78B633 #33B6B2 #7033B6

square

#B63337 #78B633 #33B6B2 #7033B6

split-complementary

#B63337 #33B670 #3378B6

monochromatic

#56181A #862629 #B63337 #D0565A #DD8689

Accessibility & contrast

On white

5.97

#B63337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B63337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63337

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63337	#FFFFFF	#000000	##FFFFFF
##B63337	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585236

Deuteranopia (green-blind)

#796E33

Tritanopia (blue-blind)

#C80036

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63337;
/* rgb */ color: rgb(182, 51, 55);
/* oklch */ color: oklch(52.1% 0.167 23.6);

Tailwind

colors: {
  custom: {
    50: '#d4746e',
    500: '#b63337',
    950: '#000000',
  },
}

SCSS

$custom: #b63337;
$custom-light: #d4746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63337",
  "rgb": {
    "r": 182,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.168,
    "s": 56.223,
    "l": 45.686
  },
  "oklch": {
    "l": 0.5215,
    "c": 0.16747,
    "h": 23.6
  },
  "luminance": 0.12589
}

Semantic roles & 50–950 ramp

primary

#B63337

secondary

#7EC7C5

accent

#E0DB48

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63337

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

Preview Lab → · Contrast checker → · Palette generator →