#B4271C#B4271C

#B4271C is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.4% C 0.179 H 29.4°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#B4271C
RGB	rgb(180, 39, 28)
HSL	hsl(4, 73%, 41%)
HSV	hsv(4, 84%, 71%)
CMYK	cmyk(0%, 78.3%, 84.4%, 29.4%)
CIE-LAB	lab(39.98, 54.89, 41.82)
CIE-LCH	lch(39.98, 69.01, 37.30°)
OKLab	oklab(50.38% 0.1558 0.0878)
OKLCH	oklch(50.38% 0.179 29.4)
XYZ	xyz(19.7600, 11.2414, 2.2278)
Luminance	0.1124 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4271C #1CA9B4

analogous

#B41C5D #B4271C #B4731C

triadic

#B4271C #1CB427 #271CB4

tetradic

#B4271C #5DB41C #1CA9B4 #731CB4

square

#B4271C #5DB41C #1CA9B4 #731CB4

split-complementary

#B4271C #1CB473 #1C5DB4

monochromatic

#4A100C #7F1C14 #B4271C #DF3B2F #E76D64

Accessibility & contrast

On white

6.47

#B4271C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#B4271C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4271C

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4271C	#FFFFFF	#000000	##FFFFFF
##B4271C	1.00	6.47	3.25	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544A19

Deuteranopia (green-blind)

#766913

Tritanopia (blue-blind)

#C70026

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b4271c;
/* rgb */ color: rgb(180, 39, 28);
/* oklch */ color: oklch(50.4% 0.179 29.4);

Tailwind

colors: {
  custom: {
    50: '#d46e5a',
    500: '#b4271c',
    950: '#000000',
  },
}

SCSS

$custom: #b4271c;
$custom-light: #d46e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4271c",
  "rgb": {
    "r": 180,
    "g": 39,
    "b": 28
  },
  "hsl": {
    "h": 4.342,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.50375,
    "c": 0.1788,
    "h": 29.4
  },
  "luminance": 0.11238
}

Semantic roles & 50–950 ramp

primary

#B4271C

secondary

#60C4CC

accent

#E2F038

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B4271C

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

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