#B72A3A#B72A3A

#B72A3A is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.5% C 0.176 H 20.3°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B72A3A
RGB	rgb(183, 42, 58)
HSL	hsl(353, 63%, 44%)
HSV	hsv(353, 77%, 72%)
CMYK	cmyk(0%, 77%, 68.3%, 28.2%)
CIE-LAB	lab(41.27, 56.02, 26.12)
CIE-LCH	lch(41.27, 61.81, 25.00°)
OKLab	oklab(51.55% 0.1653 0.0612)
OKLCH	oklch(51.55% 0.176 20.3)
XYZ	xyz(21.1225, 12.0319, 5.2124)
Luminance	0.1203 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B72A3A #2AB7A7

analogous

#B72A81 #B72A3A #B7602A

triadic

#B72A3A #3AB72A #2A3AB7

tetradic

#B72A3A #81B72A #2AB7A7 #602AB7

square

#B72A3A #81B72A #2AB7A7 #602AB7

split-complementary

#B72A3A #2AB760 #2A81B7

monochromatic

#53131A #851F2A #B72A3A #D54959 #E17B86

Accessibility & contrast

On white

6.17

#B72A3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B72A3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B72A3A

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B72A3A	#FFFFFF	#000000	##FFFFFF
##B72A3A	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E39

Deuteranopia (green-blind)

#776C36

Tritanopia (blue-blind)

#C90031

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b72a3a;
/* rgb */ color: rgb(183, 42, 58);
/* oklch */ color: oklch(51.5% 0.176 20.3);

Tailwind

colors: {
  custom: {
    50: '#d57070',
    500: '#b72a3a',
    950: '#000000',
  },
}

SCSS

$custom: #b72a3a;
$custom-light: #d57070;
$custom-dark: #000000;

JSON

{
  "hex": "#b72a3a",
  "rgb": {
    "r": 183,
    "g": 42,
    "b": 58
  },
  "hsl": {
    "h": 353.191,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51548,
    "c": 0.17625,
    "h": 20.3
  },
  "luminance": 0.12029
}

Semantic roles & 50–950 ramp

primary

#B72A3A

secondary

#74C9BF

accent

#E6D342

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160807

muted

#847B7A

Preview Lab

Preview with #B72A3A

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

Preview Lab → · Contrast checker → · Palette generator →