#B73138#B73138

#B73138 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.1% C 0.170 H 22.7°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B73138
RGB	rgb(183, 49, 56)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 73%, 72%)
CMYK	cmyk(0%, 73.2%, 69.4%, 28.2%)
CIE-LAB	lab(42.08, 53.56, 28.33)
CIE-LCH	lch(42.08, 60.59, 27.88°)
OKLab	oklab(52.14% 0.157 0.0658)
OKLCH	oklch(52.14% 0.17 22.7)
XYZ	xyz(21.3429, 12.5526, 5.0397)
Luminance	0.1255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73138 #31B7B0

analogous

#B7317B #B73138 #B76D31

triadic

#B73138 #38B731 #3138B7

tetradic

#B73138 #7BB731 #31B7B0 #6D31B7

square

#B73138 #7BB731 #31B7B0 #6D31B7

split-complementary

#B73138 #31B76D #317BB7

monochromatic

#56171A #872429 #B73138 #D1545B #DE8489

Accessibility & contrast

On white

5.98

#B73138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B73138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73138

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73138	#FFFFFF	#000000	##FFFFFF
##B73138	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575137

Deuteranopia (green-blind)

#796E34

Tritanopia (blue-blind)

#C90035

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b73138;
/* rgb */ color: rgb(183, 49, 56);
/* oklch */ color: oklch(52.1% 0.170 22.7);

Tailwind

colors: {
  custom: {
    50: '#d5736e',
    500: '#b73138',
    950: '#000000',
  },
}

SCSS

$custom: #b73138;
$custom-light: #d5736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73138",
  "rgb": {
    "r": 183,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.866,
    "s": 57.759,
    "l": 45.49
  },
  "oklch": {
    "l": 0.52144,
    "c": 0.17024,
    "h": 22.7
  },
  "luminance": 0.12549
}

Semantic roles & 50–950 ramp

primary

#B73138

secondary

#7CC8C4

accent

#E1D947

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73138

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

Preview Lab → · Contrast checker → · Palette generator →