#B73D31#B73D31

#B73D31 is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.3% C 0.160 H 29.1°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#B73D31
RGB	rgb(183, 61, 49)
HSL	hsl(5, 58%, 45%)
HSV	hsv(5, 73%, 72%)
CMYK	cmyk(0%, 66.7%, 73.2%, 28.2%)
CIE-LAB	lab(43.70, 48.53, 34.34)
CIE-LCH	lch(43.70, 59.45, 35.29°)
OKLab	oklab(53.32% 0.1397 0.0777)
OKLCH	oklch(53.32% 0.16 29.1)
XYZ	xyz(21.7539, 13.6297, 4.3904)
Luminance	0.1363 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73D31 #31ABB7

analogous

#B73168 #B73D31 #B78031

triadic

#B73D31 #31B73D #3D31B7

tetradic

#B73D31 #68B731 #31ABB7 #8031B7

square

#B73D31 #68B731 #31ABB7 #8031B7

split-complementary

#B73D31 #31B780 #3168B7

monochromatic

#561D17 #872D24 #B73D31 #D15F54 #DE8C84

Accessibility & contrast

On white

5.64

#B73D31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#B73D31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73D31

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73D31	#FFFFFF	#000000	##FFFFFF
##B73D31	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F562F

Deuteranopia (green-blind)

#7E712D

Tritanopia (blue-blind)

#C91B3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73d31;
/* rgb */ color: rgb(183, 61, 49);
/* oklch */ color: oklch(53.3% 0.160 29.1);

Tailwind

colors: {
  custom: {
    50: '#d4796a',
    500: '#b73d31',
    950: '#000000',
  },
}

SCSS

$custom: #b73d31;
$custom-light: #d4796a;
$custom-dark: #000000;

JSON

{
  "hex": "#b73d31",
  "rgb": {
    "r": 183,
    "g": 61,
    "b": 49
  },
  "hsl": {
    "h": 5.373,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53321,
    "c": 0.15982,
    "h": 29.1
  },
  "luminance": 0.13627
}

Semantic roles & 50–950 ramp

primary

#B73D31

secondary

#7CC1C8

accent

#D3E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73D31

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

Preview Lab → · Contrast checker → · Palette generator →