#B73B2B#B73B2B

#B73B2B is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.163 H 30.5°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B73B2B
RGB	rgb(183, 59, 43)
HSL	hsl(7, 62%, 44%)
HSV	hsv(7, 77%, 72%)
CMYK	cmyk(0%, 67.8%, 76.5%, 28.2%)
CIE-LAB	lab(43.32, 49.11, 37.31)
CIE-LCH	lch(43.32, 61.67, 37.22°)
OKLab	oklab(53.02% 0.1403 0.0827)
OKLCH	oklch(53.02% 0.163 30.5)
XYZ	xyz(21.5309, 13.3728, 3.7325)
Luminance	0.1337 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B2B #2BA7B7

analogous

#B72B61 #B73B2B #B7812B

triadic

#B73B2B #2BB73B #3B2BB7

tetradic

#B73B2B #61B72B #2BA7B7 #812BB7

square

#B73B2B #61B72B #2BA7B7 #812BB7

split-complementary

#B73B2B #2BB781 #2B61B7

monochromatic

#541B14 #852B1F #B73B2B #D55A4B #E0887C

Accessibility & contrast

On white

5.72

#B73B2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B73B2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B2B

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B2B	#FFFFFF	#000000	##FFFFFF
##B73B2B	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5528

Deuteranopia (green-blind)

#7D7026

Tritanopia (blue-blind)

#C91438

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73b2b;
/* rgb */ color: rgb(183, 59, 43);
/* oklch */ color: oklch(53.0% 0.163 30.5);

Tailwind

colors: {
  custom: {
    50: '#d57865',
    500: '#b73b2b',
    950: '#000000',
  },
}

SCSS

$custom: #b73b2b;
$custom-light: #d57865;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b2b",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 43
  },
  "hsl": {
    "h": 6.857,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.53016,
    "c": 0.16281,
    "h": 30.5
  },
  "luminance": 0.1337
}

Semantic roles & 50–950 ramp

primary

#B73B2B

secondary

#75BFC9

accent

#D2E543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73B2B

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

Preview Lab → · Contrast checker → · Palette generator →