#B73A28#B73A28

#B73A28 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.164 H 31.2°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B73A28
RGB	rgb(183, 58, 40)
HSL	hsl(8, 64%, 44%)
HSV	hsv(8, 78%, 72%)
CMYK	cmyk(0%, 68.3%, 78.1%, 28.2%)
CIE-LAB	lab(43.14, 49.40, 38.76)
CIE-LCH	lch(43.14, 62.79, 38.11°)
OKLab	oklab(52.87% 0.1406 0.085)
OKLCH	oklch(52.87% 0.164 31.2)
XYZ	xyz(21.4269, 13.2498, 3.4363)
Luminance	0.1325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A28 #28A5B7

analogous

#B7285D #B73A28 #B78128

triadic

#B73A28 #28B73A #3A28B7

tetradic

#B73A28 #5DB728 #28A5B7 #8128B7

square

#B73A28 #5DB728 #28A5B7 #8128B7

split-complementary

#B73A28 #28B781 #285DB7

monochromatic

#531A12 #852A1D #B73A28 #D65846 #E18578

Accessibility & contrast

On white

5.75

#B73A28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B73A28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A28

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A28	#FFFFFF	#000000	##FFFFFF
##B73A28	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5425

Deuteranopia (green-blind)

#7D7023

Tritanopia (blue-blind)

#CA1037

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a28;
/* rgb */ color: rgb(183, 58, 40);
/* oklch */ color: oklch(52.9% 0.164 31.2);

Tailwind

colors: {
  custom: {
    50: '#d57763',
    500: '#b73a28',
    950: '#000000',
  },
}

SCSS

$custom: #b73a28;
$custom-light: #d57763;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a28",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 40
  },
  "hsl": {
    "h": 7.552,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52869,
    "c": 0.16428,
    "h": 31.2
  },
  "luminance": 0.13247
}

Semantic roles & 50–950 ramp

primary

#B73A28

secondary

#72BEC9

accent

#D2E741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73A28

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

Preview Lab → · Contrast checker → · Palette generator →