#B73B40#B73B40

#B73B40 is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.3% C 0.160 H 22.2°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B73B40
RGB	rgb(183, 59, 64)
HSL	hsl(358, 51%, 47%)
HSV	hsv(358, 68%, 72%)
CMYK	cmyk(0%, 67.8%, 65%, 28.2%)
CIE-LAB	lab(43.61, 50.16, 25.38)
CIE-LCH	lch(43.61, 56.21, 26.84°)
OKLab	oklab(53.32% 0.1479 0.0603)
OKLCH	oklch(53.32% 0.16 22.2)
XYZ	xyz(22.0201, 13.5685, 6.3090)
Luminance	0.1356 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B40 #3BB7B2

analogous

#B73B7E #B73B40 #B7743B

triadic

#B73B40 #40B73B #3B40B7

tetradic

#B73B40 #7EB73B #3BB7B2 #743BB7

square

#B73B40 #7EB73B #3BB7B2 #743BB7

split-complementary

#B73B40 #3BB774 #3B7EB7

monochromatic

#5A1D20 #892C30 #B73B40 #CD6367 #DC9194

Accessibility & contrast

On white

5.66

#B73B40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B73B40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B40

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B40	#FFFFFF	#000000	##FFFFFF
##B73B40	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563F

Deuteranopia (green-blind)

#7C713D

Tritanopia (blue-blind)

#C91B3E

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73b40;
/* rgb */ color: rgb(183, 59, 64);
/* oklch */ color: oklch(53.3% 0.160 22.2);

Tailwind

colors: {
  custom: {
    50: '#d47874',
    500: '#b73b40',
    950: '#000000',
  },
}

SCSS

$custom: #b73b40;
$custom-light: #d47874;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b40",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 64
  },
  "hsl": {
    "h": 357.581,
    "s": 51.24,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53324,
    "c": 0.15971,
    "h": 22.2
  },
  "luminance": 0.13565
}

Semantic roles & 50–950 ramp

primary

#B73B40

secondary

#87C6C4

accent

#DBD54D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B73B40

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

Preview Lab → · Contrast checker → · Palette generator →