#B43A18#B43A18

#B43A18 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.164 H 35.6°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B43A18
RGB	rgb(180, 58, 24)
HSL	hsl(13, 76%, 40%)
HSV	hsv(13, 87%, 71%)
CMYK	cmyk(0%, 67.8%, 86.7%, 29.4%)
CIE-LAB	lab(42.46, 47.89, 45.87)
CIE-LCH	lch(42.46, 66.31, 43.76°)
OKLab	oklab(52.22% 0.1334 0.0954)
OKLCH	oklch(52.22% 0.164 35.6)
XYZ	xyz(20.5027, 12.7985, 2.2548)
Luminance	0.1280 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43A18 #1892B4

analogous

#B41844 #B43A18 #B48818

triadic

#B43A18 #18B43A #3A18B4

tetradic

#B43A18 #44B418 #1892B4 #8818B4

square

#B43A18 #44B418 #1892B4 #8818B4

split-complementary

#B43A18 #18B488 #1844B4

monochromatic

#48170A #7E2911 #B43A18 #E25027 #E97C5D

Accessibility & contrast

On white

5.90

#B43A18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B43A18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43A18

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43A18	#FFFFFF	#000000	##FFFFFF
##B43A18	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)

#5E5311

Deuteranopia (green-blind)

#7C6E10

Tritanopia (blue-blind)

#C70F34

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43a18;
/* rgb */ color: rgb(180, 58, 24);
/* oklch */ color: oklch(52.2% 0.164 35.6);

Tailwind

colors: {
  custom: {
    50: '#d47759',
    500: '#b43a18',
    950: '#000000',
  },
}

SCSS

$custom: #b43a18;
$custom-light: #d47759;
$custom-dark: #000000;

JSON

{
  "hex": "#b43a18",
  "rgb": {
    "r": 180,
    "g": 58,
    "b": 24
  },
  "hsl": {
    "h": 13.077,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.52216,
    "c": 0.164,
    "h": 35.6
  },
  "luminance": 0.12795
}

Semantic roles & 50–950 ramp

primary

#B43A18

secondary

#5BB4CD

accent

#CAF335

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43A18

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

Preview Lab → · Contrast checker → · Palette generator →