#B42B1A#B42B1A

#B42B1A is a mid, vivid red. Relative luminance 0.115; OKLCH L 50.7% C 0.176 H 30.8°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#B42B1A
RGB	rgb(180, 43, 26)
HSL	hsl(7, 75%, 40%)
HSV	hsv(7, 86%, 71%)
CMYK	cmyk(0%, 76.1%, 85.6%, 29.4%)
CIE-LAB	lab(40.42, 53.57, 43.21)
CIE-LCH	lch(40.42, 68.82, 38.89°)
OKLab	oklab(50.7% 0.1513 0.0901)
OKLCH	oklch(50.7% 0.176 30.8)
XYZ	xyz(19.8752, 11.5088, 2.1520)
Luminance	0.1151 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B42B1A #1AA3B4

analogous

#B41A56 #B42B1A #B4781A

triadic

#B42B1A #1AB42B #2B1AB4

tetradic

#B42B1A #56B41A #1AA3B4 #781AB4

square

#B42B1A #56B41A #1AA3B4 #781AB4

split-complementary

#B42B1A #1AB478 #1A56B4

monochromatic

#49110B #7F1E12 #B42B1A #E03F2B #E86F60

Accessibility & contrast

On white

6.36

#B42B1A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#B42B1A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B42B1A

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B42B1A	#FFFFFF	#000000	##FFFFFF
##B42B1A	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564C16

Deuteranopia (green-blind)

#776A11

Tritanopia (blue-blind)

#C70029

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #b42b1a;
/* rgb */ color: rgb(180, 43, 26);
/* oklch */ color: oklch(50.7% 0.176 30.8);

Tailwind

colors: {
  custom: {
    50: '#d47059',
    500: '#b42b1a',
    950: '#000000',
  },
}

SCSS

$custom: #b42b1a;
$custom-light: #d47059;
$custom-dark: #000000;

JSON

{
  "hex": "#b42b1a",
  "rgb": {
    "r": 180,
    "g": 43,
    "b": 26
  },
  "hsl": {
    "h": 6.623,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50698,
    "c": 0.17608,
    "h": 30.8
  },
  "luminance": 0.11506
}

Semantic roles & 50–950 ramp

primary

#B42B1A

secondary

#5DC0CC

accent

#DDF136

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B42B1A

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

Preview Lab → · Contrast checker → · Palette generator →