#B63437#B63437

#B63437 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.167 H 23.9°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B63437
RGB	rgb(182, 52, 55)
HSL	hsl(359, 56%, 46%)
HSV	hsv(359, 71%, 71%)
CMYK	cmyk(0%, 71.4%, 69.8%, 28.6%)
CIE-LAB	lab(42.28, 52.09, 29.13)
CIE-LCH	lch(42.28, 59.68, 29.21°)
OKLab	oklab(52.25% 0.1523 0.0674)
OKLCH	oklch(52.25% 0.167 23.9)
XYZ	xyz(21.2113, 12.6801, 4.9443)
Luminance	0.1268 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63437 #34B6B3

analogous

#B63478 #B63437 #B67234

triadic

#B63437 #37B634 #3437B6

tetradic

#B63437 #78B634 #34B6B3 #7234B6

square

#B63437 #78B634 #34B6B3 #7234B6

split-complementary

#B63437 #34B672 #3478B6

monochromatic

#57191A #862629 #B63437 #CF585B #DD888A

Accessibility & contrast

On white

5.94

#B63437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B63437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63437

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63437	#FFFFFF	#000000	##FFFFFF
##B63437	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#796E33

Tritanopia (blue-blind)

#C80337

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b63437;
/* rgb */ color: rgb(182, 52, 55);
/* oklch */ color: oklch(52.3% 0.167 23.9);

Tailwind

colors: {
  custom: {
    50: '#d4746e',
    500: '#b63437',
    950: '#000000',
  },
}

SCSS

$custom: #b63437;
$custom-light: #d4746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63437",
  "rgb": {
    "r": 182,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.615,
    "s": 55.556,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52251,
    "c": 0.16653,
    "h": 23.9
  },
  "luminance": 0.12677
}

Semantic roles & 50–950 ramp

primary

#B63437

secondary

#7FC7C5

accent

#DFDB49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63437

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

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