#B4231D#B4231D

#B4231D is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.1% C 0.181 H 28.4°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#B4231D
RGB	rgb(180, 35, 29)
HSL	hsl(2, 72%, 41%)
HSV	hsv(2, 84%, 71%)
CMYK	cmyk(0%, 80.6%, 83.9%, 29.4%)
CIE-LAB	lab(39.58, 56.09, 40.94)
CIE-LCH	lch(39.58, 69.44, 36.12°)
OKLab	oklab(50.07% 0.1597 0.0862)
OKLCH	oklch(50.07% 0.181 28.4)
XYZ	xyz(19.6477, 10.9973, 2.2503)
Luminance	0.1099 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4231D #1DAEB4

analogous

#B41D62 #B4231D #B46E1D

triadic

#B4231D #1DB423 #231DB4

tetradic

#B4231D #62B41D #1DAEB4 #6E1DB4

square

#B4231D #62B41D #1DAEB4 #6E1DB4

split-complementary

#B4231D #1DB46E #1D62B4

monochromatic

#4B0F0C #7F1915 #B4231D #DE3730 #E66A65

Accessibility & contrast

On white

6.56

#B4231D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#B4231D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4231D

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4231D	#FFFFFF	#000000	##FFFFFF
##B4231D	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52491A

Deuteranopia (green-blind)

#756814

Tritanopia (blue-blind)

#C70024

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b4231d;
/* rgb */ color: rgb(180, 35, 29);
/* oklch */ color: oklch(50.1% 0.181 28.4);

Tailwind

colors: {
  custom: {
    50: '#d46c5b',
    500: '#b4231d',
    950: '#000000',
  },
}

SCSS

$custom: #b4231d;
$custom-light: #d46c5b;
$custom-dark: #000000;

JSON

{
  "hex": "#b4231d",
  "rgb": {
    "r": 180,
    "g": 35,
    "b": 29
  },
  "hsl": {
    "h": 2.384,
    "s": 72.249,
    "l": 40.98
  },
  "oklch": {
    "l": 0.50074,
    "c": 0.18148,
    "h": 28.4
  },
  "luminance": 0.10994
}

Semantic roles & 50–950 ramp

primary

#B4231D

secondary

#61C7CB

accent

#E8EF39

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B4231D

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

Preview Lab → · Contrast checker → · Palette generator →