#B43A1B#B43A1B

#B43A1B is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.164 H 34.9°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B43A1B
RGB	rgb(180, 58, 27)
HSL	hsl(12, 74%, 41%)
HSV	hsv(12, 85%, 71%)
CMYK	cmyk(0%, 67.8%, 85%, 29.4%)
CIE-LAB	lab(42.48, 47.97, 44.53)
CIE-LCH	lch(42.48, 65.45, 42.87°)
OKLab	oklab(52.24% 0.1341 0.0935)
OKLCH	oklch(52.24% 0.164 34.9)
XYZ	xyz(20.5357, 12.8116, 2.4283)
Luminance	0.1281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43A1B #1B95B4

analogous

#B41B48 #B43A1B #B4861B

triadic

#B43A1B #1BB43A #3A1BB4

tetradic

#B43A1B #48B41B #1B95B4 #861BB4

square

#B43A1B #48B41B #1B95B4 #861BB4

split-complementary

#B43A1B #1BB486 #1B48B4

monochromatic

#4A180B #7F2913 #B43A1B #DF512D #E77D62

Accessibility & contrast

On white

5.90

#B43A1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B43A1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43A1B

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43A1B	#FFFFFF	#000000	##FFFFFF
##B43A1B	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5315

Deuteranopia (green-blind)

#7C6E14

Tritanopia (blue-blind)

#C61034

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43a1b;
/* rgb */ color: rgb(180, 58, 27);
/* oklch */ color: oklch(52.2% 0.164 34.9);

Tailwind

colors: {
  custom: {
    50: '#d4775b',
    500: '#b43a1b',
    950: '#000000',
  },
}

SCSS

$custom: #b43a1b;
$custom-light: #d4775b;
$custom-dark: #000000;

JSON

{
  "hex": "#b43a1b",
  "rgb": {
    "r": 180,
    "g": 58,
    "b": 27
  },
  "hsl": {
    "h": 12.157,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.52238,
    "c": 0.1635,
    "h": 34.9
  },
  "luminance": 0.12809
}

Semantic roles & 50–950 ramp

primary

#B43A1B

secondary

#5FB6CC

accent

#CBF137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43A1B

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

Preview Lab → · Contrast checker → · Palette generator →