#B42F37#B42F37

#B42F37 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.4% C 0.169 H 22.4°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#B42F37
RGB	rgb(180, 47, 55)
HSL	hsl(356, 59%, 45%)
HSV	hsv(356, 74%, 71%)
CMYK	cmyk(0%, 73.9%, 69.4%, 29.4%)
CIE-LAB	lab(41.24, 53.28, 27.79)
CIE-LCH	lch(41.24, 60.09, 27.54°)
OKLab	oklab(51.41% 0.1563 0.0646)
OKLCH	oklch(51.41% 0.169 22.4)
XYZ	xyz(20.5308, 12.0153, 4.8518)
Luminance	0.1201 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42F37 #2FB4AC

analogous

#B42F7A #B42F37 #B46A2F

triadic

#B42F37 #37B42F #2F37B4

tetradic

#B42F37 #7AB42F #2FB4AC #6A2FB4

square

#B42F37 #7AB42F #2FB4AC #6A2FB4

split-complementary

#B42F37 #2FB46A #2F7AB4

monochromatic

#531619 #832228 #B42F37 #D14F57 #DE8085

Accessibility & contrast

On white

6.17

#B42F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B42F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42F37

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42F37	#FFFFFF	#000000	##FFFFFF
##B42F37	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554F36

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C60033

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b42f37;
/* rgb */ color: rgb(180, 47, 55);
/* oklch */ color: oklch(51.4% 0.169 22.4);

Tailwind

colors: {
  custom: {
    50: '#d2726e',
    500: '#b42f37',
    950: '#000000',
  },
}

SCSS

$custom: #b42f37;
$custom-light: #d2726e;
$custom-dark: #000000;

JSON

{
  "hex": "#b42f37",
  "rgb": {
    "r": 180,
    "g": 47,
    "b": 55
  },
  "hsl": {
    "h": 356.391,
    "s": 58.59,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51409,
    "c": 0.16911,
    "h": 22.4
  },
  "luminance": 0.12012
}

Semantic roles & 50–950 ramp

primary

#B42F37

secondary

#78C7C2

accent

#E2D846

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B42F37

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

Preview Lab → · Contrast checker → · Palette generator →