#B73F3F#B73F3F

#B73F3F is a mid, vivid red. Relative luminance 0.140; OKLCH L 53.8% C 0.156 H 24.0°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#B73F3F
RGB	rgb(183, 63, 63)
HSL	hsl(0, 49%, 48%)
HSV	hsv(0, 66%, 72%)
CMYK	cmyk(0%, 65.6%, 65.6%, 28.2%)
CIE-LAB	lab(44.21, 48.42, 26.74)
CIE-LCH	lch(44.21, 55.31, 28.91°)
OKLab	oklab(53.77% 0.1422 0.0632)
OKLCH	oklch(53.77% 0.156 24)
XYZ	xyz(22.2054, 13.9843, 6.2316)
Luminance	0.1398 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F3F #3FB7B7

analogous

#B73F7B #B73F3F #B77B3F

triadic

#B73F3F #3FB73F #3F3FB7

tetradic

#B73F3F #7BB73F #3FB7B7 #7B3FB7

square

#B73F3F #7BB73F #3FB7B7 #7B3FB7

split-complementary

#B73F3F #3FB77B #3F7BB7

monochromatic

#5C2020 #892F2F #B73F3F #CB6868 #DB9696

Accessibility & contrast

On white

5.53

#B73F3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#B73F3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F3F

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F3F	#FFFFFF	#000000	##FFFFFF
##B73F3F	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F583E

Deuteranopia (green-blind)

#7D723C

Tritanopia (blue-blind)

#C92340

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f3f;
/* rgb */ color: rgb(183, 63, 63);
/* oklch */ color: oklch(53.8% 0.156 24.0);

Tailwind

colors: {
  custom: {
    50: '#d37a74',
    500: '#b73f3f',
    950: '#000000',
  },
}

SCSS

$custom: #b73f3f;
$custom-light: #d37a74;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f3f",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 0,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.5377,
    "c": 0.15561,
    "h": 24
  },
  "luminance": 0.13981
}

Semantic roles & 50–950 ramp

primary

#B73F3F

secondary

#8BC6C6

accent

#D8D84F

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B73F3F

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

Preview Lab → · Contrast checker → · Palette generator →