#B73130#B73130

#B73130 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.171 H 25.8°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B73130
RGB	rgb(183, 49, 48)
HSL	hsl(0, 58%, 45%)
HSV	hsv(0, 74%, 72%)
CMYK	cmyk(0%, 73.2%, 73.8%, 28.2%)
CIE-LAB	lab(41.97, 53.18, 32.96)
CIE-LCH	lch(41.97, 62.57, 31.79°)
OKLab	oklab(52.03% 0.1541 0.0744)
OKLCH	oklch(52.03% 0.171 25.8)
XYZ	xyz(21.1627, 12.4805, 4.0904)
Luminance	0.1248 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73130 #30B6B7

analogous

#B73073 #B73130 #B77430

triadic

#B73130 #30B731 #3130B7

tetradic

#B73130 #73B730 #30B6B7 #7430B7

square

#B73130 #73B730 #30B6B7 #7430B7

split-complementary

#B73130 #30B774 #3073B7

monochromatic

#561717 #872423 #B73130 #D25352 #DE8483

Accessibility & contrast

On white

6.01

#B73130 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B73130 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73130

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73130	#FFFFFF	#000000	##FFFFFF
##B73130	1.00	6.01	3.50	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58512E

Deuteranopia (green-blind)

#7A6E2B

Tritanopia (blue-blind)

#C90032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b73130;
/* rgb */ color: rgb(183, 49, 48);
/* oklch */ color: oklch(52.0% 0.171 25.8);

Tailwind

colors: {
  custom: {
    50: '#d57368',
    500: '#b73130',
    950: '#000000',
  },
}

SCSS

$custom: #b73130;
$custom-light: #d57368;
$custom-dark: #000000;

JSON

{
  "hex": "#b73130",
  "rgb": {
    "r": 183,
    "g": 49,
    "b": 48
  },
  "hsl": {
    "h": 0.444,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52025,
    "c": 0.17114,
    "h": 25.8
  },
  "luminance": 0.12477
}

Semantic roles & 50–950 ramp

primary

#B73130

secondary

#7BC7C8

accent

#E1E246

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73130

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

Preview Lab → · Contrast checker → · Palette generator →