#B73529#B73529

#B73529 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.169 H 29.3°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B73529
RGB	rgb(183, 53, 41)
HSL	hsl(5, 63%, 44%)
HSV	hsv(5, 78%, 72%)
CMYK	cmyk(0%, 71%, 77.6%, 28.2%)
CIE-LAB	lab(42.42, 51.42, 37.46)
CIE-LCH	lch(42.42, 63.62, 36.08°)
OKLab	oklab(52.34% 0.1471 0.0825)
OKLCH	oklch(52.34% 0.169 29.3)
XYZ	xyz(21.2042, 12.7768, 3.4471)
Luminance	0.1277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73529 #29ABB7

analogous

#B72964 #B73529 #B77C29

triadic

#B73529 #29B735 #3529B7

tetradic

#B73529 #64B729 #29ABB7 #7C29B7

square

#B73529 #64B729 #29ABB7 #7C29B7

split-complementary

#B73529 #29B77C #2964B7

monochromatic

#531813 #85271E #B73529 #D65347 #E18279

Accessibility & contrast

On white

5.91

#B73529 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B73529 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73529

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73529	#FFFFFF	#000000	##FFFFFF
##B73529	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5226

Deuteranopia (green-blind)

#7B6F24

Tritanopia (blue-blind)

#CA0033

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b73529;
/* rgb */ color: rgb(183, 53, 41);
/* oklch */ color: oklch(52.3% 0.169 29.3);

Tailwind

colors: {
  custom: {
    50: '#d57564',
    500: '#b73529',
    950: '#000000',
  },
}

SCSS

$custom: #b73529;
$custom-light: #d57564;
$custom-dark: #000000;

JSON

{
  "hex": "#b73529",
  "rgb": {
    "r": 183,
    "g": 53,
    "b": 41
  },
  "hsl": {
    "h": 5.07,
    "s": 63.393,
    "l": 43.922
  },
  "oklch": {
    "l": 0.52339,
    "c": 0.16861,
    "h": 29.3
  },
  "luminance": 0.12774
}

Semantic roles & 50–950 ramp

primary

#B73529

secondary

#73C2C9

accent

#D8E641

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B73529

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

Preview Lab → · Contrast checker → · Palette generator →