#B73D3F#B73D3F

#B73D3F is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.5% C 0.158 H 23.3°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#B73D3F
RGB	rgb(183, 61, 63)
HSL	hsl(359, 50%, 48%)
HSV	hsv(359, 67%, 72%)
CMYK	cmyk(0%, 66.7%, 65.6%, 28.2%)
CIE-LAB	lab(43.90, 49.27, 26.35)
CIE-LCH	lch(43.90, 55.87, 28.13°)
OKLab	oklab(53.54% 0.1449 0.0623)
OKLCH	oklch(53.54% 0.158 23.3)
XYZ	xyz(22.0966, 13.7668, 6.1954)
Luminance	0.1376 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73D3F #3DB7B5

analogous

#B73D7C #B73D3F #B7783D

triadic

#B73D3F #3FB73D #3D3FB7

tetradic

#B73D3F #7CB73D #3DB7B5 #783DB7

square

#B73D3F #7CB73D #3DB7B5 #783DB7

split-complementary

#B73D3F #3DB778 #3D7CB7

monochromatic

#5B1E1F #892E2F #B73D3F #CC6567 #DB9394

Accessibility & contrast

On white

5.60

#B73D3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#B73D3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73D3F

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73D3F	#FFFFFF	#000000	##FFFFFF
##B73D3F	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E573E

Deuteranopia (green-blind)

#7C713C

Tritanopia (blue-blind)

#C91F3F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73d3f;
/* rgb */ color: rgb(183, 61, 63);
/* oklch */ color: oklch(53.5% 0.158 23.3);

Tailwind

colors: {
  custom: {
    50: '#d47974',
    500: '#b73d3f',
    950: '#000000',
  },
}

SCSS

$custom: #b73d3f;
$custom-light: #d47974;
$custom-dark: #000000;

JSON

{
  "hex": "#b73d3f",
  "rgb": {
    "r": 183,
    "g": 61,
    "b": 63
  },
  "hsl": {
    "h": 359.016,
    "s": 50,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53535,
    "c": 0.15771,
    "h": 23.3
  },
  "luminance": 0.13764
}

Semantic roles & 50–950 ramp

primary

#B73D3F

secondary

#89C6C5

accent

#DAD74E

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B73D3F

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

Preview Lab → · Contrast checker → · Palette generator →