#B43721#B43721

#B43721 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.9% C 0.165 H 32.4°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B43721
RGB	rgb(180, 55, 33)
HSL	hsl(9, 69%, 42%)
HSV	hsv(9, 82%, 71%)
CMYK	cmyk(0%, 69.4%, 81.7%, 29.4%)
CIE-LAB	lab(42.08, 49.36, 41.22)
CIE-LCH	lch(42.08, 64.31, 39.86°)
OKLab	oklab(51.95% 0.1395 0.0884)
OKLCH	oklch(51.95% 0.165 32.4)
XYZ	xyz(20.4655, 12.5486, 2.7831)
Luminance	0.1255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43721 #219EB4

analogous

#B42154 #B43721 #B48121

triadic

#B43721 #21B437 #3721B4

tetradic

#B43721 #54B421 #219EB4 #8121B4

square

#B43721 #54B421 #219EB4 #8121B4

split-complementary

#B43721 #21B481 #2154B4

monochromatic

#4D170E #802718 #B43721 #DA5038 #E47D6B

Accessibility & contrast

On white

5.98

#B43721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B43721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43721

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43721	#FFFFFF	#000000	##FFFFFF
##B43721	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C521D

Deuteranopia (green-blind)

#7B6D1B

Tritanopia (blue-blind)

#C60733

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43721;
/* rgb */ color: rgb(180, 55, 33);
/* oklch */ color: oklch(51.9% 0.165 32.4);

Tailwind

colors: {
  custom: {
    50: '#d3755e',
    500: '#b43721',
    950: '#000000',
  },
}

SCSS

$custom: #b43721;
$custom-light: #d3755e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43721",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 8.98,
    "s": 69.014,
    "l": 41.765
  },
  "oklch": {
    "l": 0.5195,
    "c": 0.1651,
    "h": 32.4
  },
  "luminance": 0.12545
}

Semantic roles & 50–950 ramp

primary

#B43721

secondary

#67BBCA

accent

#D2EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B43721

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

Preview Lab → · Contrast checker → · Palette generator →