#B4231E#B4231E

#B4231E is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.1% C 0.181 H 28.1°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#B4231E
RGB	rgb(180, 35, 30)
HSL	hsl(2, 71%, 41%)
HSV	hsv(2, 83%, 71%)
CMYK	cmyk(0%, 80.6%, 83.3%, 29.4%)
CIE-LAB	lab(39.58, 56.11, 40.42)
CIE-LCH	lch(39.58, 69.15, 35.76°)
OKLab	oklab(50.08% 0.16 0.0855)
OKLCH	oklch(50.08% 0.181 28.1)
XYZ	xyz(19.6602, 11.0023, 2.3165)
Luminance	0.1100 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4231E #1EAFB4

analogous

#B41E64 #B4231E #B46E1E

triadic

#B4231E #1EB423 #231EB4

tetradic

#B4231E #64B41E #1EAFB4 #6E1EB4

square

#B4231E #64B41E #1EAFB4 #6E1EB4

split-complementary

#B4231E #1EB46E #1E64B4

monochromatic

#4B0F0D #801915 #B4231E #DD3832 #E66B67

Accessibility & contrast

On white

6.56

#B4231E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#B4231E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4231E

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4231E	#FFFFFF	#000000	##FFFFFF
##B4231E	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)

#52491B

Deuteranopia (green-blind)

#756816

Tritanopia (blue-blind)

#C70024

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b4231e;
/* rgb */ color: rgb(180, 35, 30);
/* oklch */ color: oklch(50.1% 0.181 28.1);

Tailwind

colors: {
  custom: {
    50: '#d46d5b',
    500: '#b4231e',
    950: '#000000',
  },
}

SCSS

$custom: #b4231e;
$custom-light: #d46d5b;
$custom-dark: #000000;

JSON

{
  "hex": "#b4231e",
  "rgb": {
    "r": 180,
    "g": 35,
    "b": 30
  },
  "hsl": {
    "h": 2,
    "s": 71.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.50083,
    "c": 0.18136,
    "h": 28.1
  },
  "luminance": 0.10999
}

Semantic roles & 50–950 ramp

primary

#B4231E

secondary

#63C7CB

accent

#E8EE3A

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #B4231E

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

Preview Lab → · Contrast checker → · Palette generator →