#B43A21#B43A21

#B43A21 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.162 H 33.4°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B43A21
RGB	rgb(180, 58, 33)
HSL	hsl(10, 69%, 42%)
HSV	hsv(10, 82%, 71%)
CMYK	cmyk(0%, 67.8%, 81.7%, 29.4%)
CIE-LAB	lab(42.52, 48.14, 41.65)
CIE-LCH	lch(42.52, 63.65, 40.87°)
OKLab	oklab(52.29% 0.1357 0.0893)
OKLCH	oklch(52.29% 0.162 33.4)
XYZ	xyz(20.6123, 12.8423, 2.8320)
Luminance	0.1284 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43A21 #219BB4

analogous

#B42152 #B43A21 #B48421

triadic

#B43A21 #21B43A #3A21B4

tetradic

#B43A21 #52B421 #219BB4 #8421B4

square

#B43A21 #52B421 #219BB4 #8421B4

split-complementary

#B43A21 #21B484 #2152B4

monochromatic

#4D190E #802918 #B43A21 #DA5338 #E4806B

Accessibility & contrast

On white

5.89

#B43A21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B43A21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43A21

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43A21	#FFFFFF	#000000	##FFFFFF
##B43A21	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)

#5E531D

Deuteranopia (green-blind)

#7C6E1B

Tritanopia (blue-blind)

#C61235

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43a21;
/* rgb */ color: rgb(180, 58, 33);
/* oklch */ color: oklch(52.3% 0.162 33.4);

Tailwind

colors: {
  custom: {
    50: '#d3775f',
    500: '#b43a21',
    950: '#000000',
  },
}

SCSS

$custom: #b43a21;
$custom-light: #d3775f;
$custom-dark: #000000;

JSON

{
  "hex": "#b43a21",
  "rgb": {
    "r": 180,
    "g": 58,
    "b": 33
  },
  "hsl": {
    "h": 10.204,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.52287,
    "c": 0.16242,
    "h": 33.4
  },
  "luminance": 0.12839
}

Semantic roles & 50–950 ramp

primary

#B43A21

secondary

#67B9CA

accent

#CEEC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43A21

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

Preview Lab → · Contrast checker → · Palette generator →