#B73F36#B73F36

#B73F36 is a mid, vivid red. Relative luminance 0.139; OKLCH L 53.6% C 0.157 H 27.8°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#B73F36
RGB	rgb(183, 63, 54)
HSL	hsl(4, 54%, 46%)
HSV	hsv(4, 70%, 72%)
CMYK	cmyk(0%, 65.6%, 70.5%, 28.2%)
CIE-LAB	lab(44.08, 47.92, 31.90)
CIE-LCH	lch(44.08, 57.57, 33.65°)
OKLab	oklab(53.63% 0.1388 0.0733)
OKLCH	oklch(53.63% 0.157 27.8)
XYZ	xyz(21.9741, 13.8918, 5.0136)
Luminance	0.1389 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F36 #36AEB7

analogous

#B7366E #B73F36 #B78036

triadic

#B73F36 #36B73F #3F36B7

tetradic

#B73F36 #6EB736 #36AEB7 #8036B7

square

#B73F36 #6EB736 #36AEB7 #8036B7

split-complementary

#B73F36 #36B780 #366EB7

monochromatic

#581E1A #882F28 #B73F36 #CF645B #DD908B

Accessibility & contrast

On white

5.56

#B73F36 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#B73F36 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F36

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F36	#FFFFFF	#000000	##FFFFFF
##B73F36	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605834

Deuteranopia (green-blind)

#7E7232

Tritanopia (blue-blind)

#C9203E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f36;
/* rgb */ color: rgb(183, 63, 54);
/* oklch */ color: oklch(53.6% 0.157 27.8);

Tailwind

colors: {
  custom: {
    50: '#d47a6d',
    500: '#b73f36',
    950: '#000000',
  },
}

SCSS

$custom: #b73f36;
$custom-light: #d47a6d;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f36",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 54
  },
  "hsl": {
    "h": 4.186,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53627,
    "c": 0.15696,
    "h": 27.8
  },
  "luminance": 0.13889
}

Semantic roles & 50–950 ramp

primary

#B73F36

secondary

#82C2C7

accent

#D3DE4A

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A07

muted

#847C7A

Preview Lab

Preview with #B73F36

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

Preview Lab → · Contrast checker → · Palette generator →