#B43B1F#B43B1F

#B43B1F is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.162 H 34.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B43B1F
RGB	rgb(180, 59, 31)
HSL	hsl(11, 71%, 41%)
HSV	hsv(11, 83%, 71%)
CMYK	cmyk(0%, 67.2%, 82.8%, 29.4%)
CIE-LAB	lab(42.66, 47.66, 42.78)
CIE-LCH	lch(42.66, 64.04, 41.91°)
OKLab	oklab(52.39% 0.1338 0.0911)
OKLCH	oklch(52.39% 0.162 34.3)
XYZ	xyz(20.6361, 12.9332, 2.7058)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43B1F #1F98B4

analogous

#B41F4E #B43B1F #B4861F

triadic

#B43B1F #1FB43B #3B1FB4

tetradic

#B43B1F #4EB41F #1F98B4 #861FB4

square

#B43B1F #4EB41F #1F98B4 #861FB4

split-complementary

#B43B1F #1FB486 #1F4EB4

monochromatic

#4C190D #802A16 #B43B1F #DC5434 #E58068

Accessibility & contrast

On white

5.86

#B43B1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B43B1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43B1F

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43B1F	#FFFFFF	#000000	##FFFFFF
##B43B1F	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E541A

Deuteranopia (green-blind)

#7C6F19

Tritanopia (blue-blind)

#C61436

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b43b1f;
/* rgb */ color: rgb(180, 59, 31);
/* oklch */ color: oklch(52.4% 0.162 34.3);

Tailwind

colors: {
  custom: {
    50: '#d3775d',
    500: '#b43b1f',
    950: '#000000',
  },
}

SCSS

$custom: #b43b1f;
$custom-light: #d3775d;
$custom-dark: #000000;

JSON

{
  "hex": "#b43b1f",
  "rgb": {
    "r": 180,
    "g": 59,
    "b": 31
  },
  "hsl": {
    "h": 11.275,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.52386,
    "c": 0.1619,
    "h": 34.3
  },
  "luminance": 0.1293
}

Semantic roles & 50–950 ramp

primary

#B43B1F

secondary

#64B7CB

accent

#CCED3A

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43B1F

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

Preview Lab → · Contrast checker → · Palette generator →