#B73B28#B73B28

#B73B28 is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.163 H 31.5°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B73B28
RGB	rgb(183, 59, 40)
HSL	hsl(8, 64%, 44%)
HSV	hsv(8, 78%, 72%)
CMYK	cmyk(0%, 67.8%, 78.1%, 28.2%)
CIE-LAB	lab(43.29, 48.99, 38.91)
CIE-LCH	lch(43.29, 62.57, 38.46°)
OKLab	oklab(52.98% 0.1393 0.0853)
OKLCH	oklch(52.98% 0.163 31.5)
XYZ	xyz(21.4778, 13.3516, 3.4533)
Luminance	0.1335 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B28 #28A4B7

analogous

#B7285C #B73B28 #B78228

triadic

#B73B28 #28B73B #3B28B7

tetradic

#B73B28 #5CB728 #28A4B7 #8228B7

square

#B73B28 #5CB728 #28A4B7 #8228B7

split-complementary

#B73B28 #28B782 #285CB7

monochromatic

#531B12 #852B1D #B73B28 #D65946 #E18678

Accessibility & contrast

On white

5.72

#B73B28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B73B28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B28

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B28	#FFFFFF	#000000	##FFFFFF
##B73B28	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)

#5F5525

Deuteranopia (green-blind)

#7D7023

Tritanopia (blue-blind)

#CA1338

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73b28;
/* rgb */ color: rgb(183, 59, 40);
/* oklch */ color: oklch(53.0% 0.163 31.5);

Tailwind

colors: {
  custom: {
    50: '#d57863',
    500: '#b73b28',
    950: '#000000',
  },
}

SCSS

$custom: #b73b28;
$custom-light: #d57863;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b28",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 40
  },
  "hsl": {
    "h": 7.972,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52982,
    "c": 0.16337,
    "h": 31.5
  },
  "luminance": 0.13348
}

Semantic roles & 50–950 ramp

primary

#B73B28

secondary

#72BEC9

accent

#D1E741

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73B28

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

Preview Lab → · Contrast checker → · Palette generator →