#B42B37#B42B37

#B42B37 is a mid, vivid red. Relative luminance 0.117; OKLCH L 51.0% C 0.173 H 21.5°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#B42B37
RGB	rgb(180, 43, 55)
HSL	hsl(355, 61%, 44%)
HSV	hsv(355, 76%, 71%)
CMYK	cmyk(0%, 76.1%, 69.4%, 29.4%)
CIE-LAB	lab(40.75, 54.64, 27.19)
CIE-LCH	lch(40.75, 61.03, 26.46°)
OKLab	oklab(51.05% 0.1606 0.0632)
OKLCH	oklch(51.05% 0.173 21.5)
XYZ	xyz(20.3781, 11.7100, 4.8009)
Luminance	0.1171 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42B37 #2BB4A8

analogous

#B42B7B #B42B37 #B4632B

triadic

#B42B37 #37B42B #2B37B4

tetradic

#B42B37 #7BB42B #2BB4A8 #632BB4

square

#B42B37 #7BB42B #2BB4A8 #632BB4

split-complementary

#B42B37 #2BB463 #2B7BB4

monochromatic

#511319 #831F28 #B42B37 #D34955 #DF7A83

Accessibility & contrast

On white

6.28

#B42B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#B42B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42B37

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42B37	#FFFFFF	#000000	##FFFFFF
##B42B37	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534D36

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C60031

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b42b37;
/* rgb */ color: rgb(180, 43, 55);
/* oklch */ color: oklch(51.0% 0.173 21.5);

Tailwind

colors: {
  custom: {
    50: '#d3706d',
    500: '#b42b37',
    950: '#000000',
  },
}

SCSS

$custom: #b42b37;
$custom-light: #d3706d;
$custom-dark: #000000;

JSON

{
  "hex": "#b42b37",
  "rgb": {
    "r": 180,
    "g": 43,
    "b": 55
  },
  "hsl": {
    "h": 354.745,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.51046,
    "c": 0.17265,
    "h": 21.5
  },
  "luminance": 0.11707
}

Semantic roles & 50–950 ramp

primary

#B42B37

secondary

#73C7C0

accent

#E5D643

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B42B37

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

Preview Lab → · Contrast checker → · Palette generator →