#B73830#B73830

#B73830 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.165 H 27.8°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#B73830
RGB	rgb(183, 56, 48)
HSL	hsl(4, 58%, 45%)
HSV	hsv(4, 74%, 72%)
CMYK	cmyk(0%, 69.4%, 73.8%, 28.2%)
CIE-LAB	lab(42.93, 50.53, 34.05)
CIE-LCH	lch(42.93, 60.94, 33.98°)
OKLab	oklab(52.74% 0.1458 0.0768)
OKLCH	oklch(52.74% 0.165 27.8)
XYZ	xyz(21.4785, 13.1122, 4.1957)
Luminance	0.1311 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73830 #30AFB7

analogous

#B7306B #B73830 #B77C30

triadic

#B73830 #30B738 #3830B7

tetradic

#B73830 #6BB730 #30AFB7 #7C30B7

square

#B73830 #6BB730 #30AFB7 #7C30B7

split-complementary

#B73830 #30B77C #306BB7

monochromatic

#561A17 #872923 #B73830 #D25A52 #DE8883

Accessibility & contrast

On white

5.80

#B73830 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B73830 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73830

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73830	#FFFFFF	#000000	##FFFFFF
##B73830	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C542E

Deuteranopia (green-blind)

#7C702C

Tritanopia (blue-blind)

#C90D37

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73830;
/* rgb */ color: rgb(183, 56, 48);
/* oklch */ color: oklch(52.7% 0.165 27.8);

Tailwind

colors: {
  custom: {
    50: '#d57669',
    500: '#b73830',
    950: '#000000',
  },
}

SCSS

$custom: #b73830;
$custom-light: #d57669;
$custom-dark: #000000;

JSON

{
  "hex": "#b73830",
  "rgb": {
    "r": 183,
    "g": 56,
    "b": 48
  },
  "hsl": {
    "h": 3.556,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52744,
    "c": 0.16476,
    "h": 27.8
  },
  "luminance": 0.13109
}

Semantic roles & 50–950 ramp

primary

#B73830

secondary

#7BC3C8

accent

#D8E246

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73830

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

Preview Lab → · Contrast checker → · Palette generator →