#B73F3A#B73F3A

#B73F3A is a mid, vivid red. Relative luminance 0.139; OKLCH L 53.7% C 0.156 H 26.2°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#B73F3A
RGB	rgb(183, 63, 58)
HSL	hsl(2, 52%, 47%)
HSV	hsv(2, 68%, 72%)
CMYK	cmyk(0%, 65.6%, 68.3%, 28.2%)
CIE-LAB	lab(44.13, 48.13, 29.62)
CIE-LCH	lch(44.13, 56.52, 31.61°)
OKLab	oklab(53.69% 0.1403 0.069)
OKLCH	oklch(53.69% 0.156 26.2)
XYZ	xyz(22.0720, 13.9309, 5.5289)
Luminance	0.1393 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73F3A #3AB2B7

analogous

#B73A74 #B73F3A #B77E3A

triadic

#B73F3A #3AB73F #3F3AB7

tetradic

#B73F3A #74B73A #3AB2B7 #7E3AB7

square

#B73F3A #74B73A #3AB2B7 #7E3AB7

split-complementary

#B73F3A #3AB77E #3A74B7

monochromatic

#5A1F1D #892F2B #B73F3A #CD6661 #DC9390

Accessibility & contrast

On white

5.55

#B73F3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#B73F3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73F3A

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73F3A	#FFFFFF	#000000	##FFFFFF
##B73F3A	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605839

Deuteranopia (green-blind)

#7E7236

Tritanopia (blue-blind)

#C9213F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b73f3a;
/* rgb */ color: rgb(183, 63, 58);
/* oklch */ color: oklch(53.7% 0.156 26.2);

Tailwind

colors: {
  custom: {
    50: '#d47a70',
    500: '#b73f3a',
    950: '#000000',
  },
}

SCSS

$custom: #b73f3a;
$custom-light: #d47a70;
$custom-dark: #000000;

JSON

{
  "hex": "#b73f3a",
  "rgb": {
    "r": 183,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 2.4,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53688,
    "c": 0.15631,
    "h": 26.2
  },
  "luminance": 0.13928
}

Semantic roles & 50–950 ramp

primary

#B73F3A

secondary

#86C4C7

accent

#D6DB4C

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #B73F3A

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

Preview Lab → · Contrast checker → · Palette generator →