#B43A1F#B43A1F

#B43A1F is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.163 H 33.9°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B43A1F
RGB	rgb(180, 58, 31)
HSL	hsl(11, 71%, 41%)
HSV	hsv(11, 83%, 71%)
CMYK	cmyk(0%, 67.8%, 82.8%, 29.4%)
CIE-LAB	lab(42.51, 48.08, 42.63)
CIE-LCH	lch(42.51, 64.26, 41.57°)
OKLab	oklab(52.27% 0.1351 0.0908)
OKLCH	oklch(52.27% 0.163 33.9)
XYZ	xyz(20.5852, 12.8314, 2.6889)
Luminance	0.1283 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43A1F #1F99B4

analogous

#B41F4F #B43A1F #B4851F

triadic

#B43A1F #1FB43A #3A1FB4

tetradic

#B43A1F #4FB41F #1F99B4 #851FB4

square

#B43A1F #4FB41F #1F99B4 #851FB4

split-complementary

#B43A1F #1FB485 #1F4FB4

monochromatic

#4C180D #802916 #B43A1F #DC5334 #E57F68

Accessibility & contrast

On white

5.89

#B43A1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B43A1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43A1F

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43A1F	#FFFFFF	#000000	##FFFFFF
##B43A1F	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E531A

Deuteranopia (green-blind)

#7C6E19

Tritanopia (blue-blind)

#C61135

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43a1f;
/* rgb */ color: rgb(180, 58, 31);
/* oklch */ color: oklch(52.3% 0.163 33.9);

Tailwind

colors: {
  custom: {
    50: '#d3775d',
    500: '#b43a1f',
    950: '#000000',
  },
}

SCSS

$custom: #b43a1f;
$custom-light: #d3775d;
$custom-dark: #000000;

JSON

{
  "hex": "#b43a1f",
  "rgb": {
    "r": 180,
    "g": 58,
    "b": 31
  },
  "hsl": {
    "h": 10.872,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.5227,
    "c": 0.16279,
    "h": 33.9
  },
  "luminance": 0.12828
}

Semantic roles & 50–950 ramp

primary

#B43A1F

secondary

#64B8CB

accent

#CDED3A

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43A1F

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

Preview Lab → · Contrast checker → · Palette generator →