#B4381A#B4381A

#B4381A is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.165 H 34.5°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B4381A
RGB	rgb(180, 56, 26)
HSL	hsl(12, 75%, 40%)
HSV	hsv(12, 86%, 71%)
CMYK	cmyk(0%, 68.9%, 85.6%, 29.4%)
CIE-LAB	lab(42.17, 48.76, 44.72)
CIE-LCH	lch(42.17, 66.17, 42.53°)
OKLab	oklab(52% 0.1364 0.0936)
OKLCH	oklch(52% 0.165 34.5)
XYZ	xyz(20.4254, 12.6093, 2.3354)
Luminance	0.1261 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4381A #1A96B4

analogous

#B41A49 #B4381A #B4851A

triadic

#B4381A #1AB438 #381AB4

tetradic

#B4381A #49B41A #1A96B4 #851AB4

square

#B4381A #49B41A #1A96B4 #851AB4

split-complementary

#B4381A #1AB485 #1A49B4

monochromatic

#49170B #7F2712 #B4381A #E04E2B #E87B60

Accessibility & contrast

On white

5.96

#B4381A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B4381A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4381A

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4381A	#FFFFFF	#000000	##FFFFFF
##B4381A	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5214

Deuteranopia (green-blind)

#7B6E13

Tritanopia (blue-blind)

#C70833

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b4381a;
/* rgb */ color: rgb(180, 56, 26);
/* oklch */ color: oklch(52.0% 0.165 34.5);

Tailwind

colors: {
  custom: {
    50: '#d4765a',
    500: '#b4381a',
    950: '#000000',
  },
}

SCSS

$custom: #b4381a;
$custom-light: #d4765a;
$custom-dark: #000000;

JSON

{
  "hex": "#b4381a",
  "rgb": {
    "r": 180,
    "g": 56,
    "b": 26
  },
  "hsl": {
    "h": 11.688,
    "s": 74.757,
    "l": 40.392
  },
  "oklch": {
    "l": 0.52003,
    "c": 0.1654,
    "h": 34.5
  },
  "luminance": 0.12606
}

Semantic roles & 50–950 ramp

primary

#B4381A

secondary

#5DB7CC

accent

#CDF136

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4381A

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

Preview Lab → · Contrast checker → · Palette generator →