#B73E28#B73E28

#B73E28 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.3% C 0.161 H 32.5°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#B73E28
RGB	rgb(183, 62, 40)
HSL	hsl(9, 64%, 44%)
HSV	hsv(9, 78%, 72%)
CMYK	cmyk(0%, 66.1%, 78.1%, 28.2%)
CIE-LAB	lab(43.75, 47.73, 39.40)
CIE-LCH	lch(43.75, 61.89, 39.53°)
OKLab	oklab(53.33% 0.1354 0.0864)
OKLCH	oklch(53.33% 0.161 32.5)
XYZ	xyz(21.6365, 13.6689, 3.5061)
Luminance	0.1367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73E28 #28A1B7

analogous

#B72859 #B73E28 #B78528

triadic

#B73E28 #28B73E #3E28B7

tetradic

#B73E28 #59B728 #28A1B7 #8528B7

square

#B73E28 #59B728 #28A1B7 #8528B7

split-complementary

#B73E28 #28B785 #2859B7

monochromatic

#531C12 #852D1D #B73E28 #D65C46 #E18878

Accessibility & contrast

On white

5.63

#B73E28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#B73E28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73E28

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73E28	#FFFFFF	#000000	##FFFFFF
##B73E28	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615725

Deuteranopia (green-blind)

#7F7123

Tritanopia (blue-blind)

#C91B3A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73e28;
/* rgb */ color: rgb(183, 62, 40);
/* oklch */ color: oklch(53.3% 0.161 32.5);

Tailwind

colors: {
  custom: {
    50: '#d57963',
    500: '#b73e28',
    950: '#000000',
  },
}

SCSS

$custom: #b73e28;
$custom-light: #d57963;
$custom-dark: #000000;

JSON

{
  "hex": "#b73e28",
  "rgb": {
    "r": 183,
    "g": 62,
    "b": 40
  },
  "hsl": {
    "h": 9.231,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.53332,
    "c": 0.16059,
    "h": 32.5
  },
  "luminance": 0.13666
}

Semantic roles & 50–950 ramp

primary

#B73E28

secondary

#72BCC9

accent

#CEE741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73E28

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

Preview Lab → · Contrast checker → · Palette generator →