#B43B21#B43B21

#B43B21 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.162 H 33.7°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B43B21
RGB	rgb(180, 59, 33)
HSL	hsl(11, 69%, 42%)
HSV	hsv(11, 82%, 71%)
CMYK	cmyk(0%, 67.2%, 81.7%, 29.4%)
CIE-LAB	lab(42.68, 47.72, 41.80)
CIE-LCH	lch(42.68, 63.44, 41.21°)
OKLab	oklab(52.4% 0.1344 0.0896)
OKLCH	oklch(52.4% 0.162 33.7)
XYZ	xyz(20.6632, 12.9441, 2.8490)
Luminance	0.1294 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43B21 #219AB4

analogous

#B42151 #B43B21 #B48521

triadic

#B43B21 #21B43B #3B21B4

tetradic

#B43B21 #51B421 #219AB4 #8521B4

square

#B43B21 #51B421 #219AB4 #8521B4

split-complementary

#B43B21 #21B485 #2151B4

monochromatic

#4D190E #802A18 #B43B21 #DA5538 #E4816B

Accessibility & contrast

On white

5.85

#B43B21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B43B21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43B21

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43B21	#FFFFFF	#000000	##FFFFFF
##B43B21	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E541D

Deuteranopia (green-blind)

#7C6F1B

Tritanopia (blue-blind)

#C61436

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b43b21;
/* rgb */ color: rgb(180, 59, 33);
/* oklch */ color: oklch(52.4% 0.162 33.7);

Tailwind

colors: {
  custom: {
    50: '#d3775f',
    500: '#b43b21',
    950: '#000000',
  },
}

SCSS

$custom: #b43b21;
$custom-light: #d3775f;
$custom-dark: #000000;

JSON

{
  "hex": "#b43b21",
  "rgb": {
    "r": 180,
    "g": 59,
    "b": 33
  },
  "hsl": {
    "h": 10.612,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.52403,
    "c": 0.16152,
    "h": 33.7
  },
  "luminance": 0.12941
}

Semantic roles & 50–950 ramp

primary

#B43B21

secondary

#67B8CA

accent

#CDEC3C

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43B21

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

Preview Lab → · Contrast checker → · Palette generator →