#B4381C#B4381C

#B4381C is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.165 H 34.0°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B4381C
RGB	rgb(180, 56, 28)
HSL	hsl(11, 73%, 41%)
HSV	hsv(11, 84%, 71%)
CMYK	cmyk(0%, 68.9%, 84.4%, 29.4%)
CIE-LAB	lab(42.18, 48.81, 43.80)
CIE-LCH	lch(42.18, 65.58, 41.90°)
OKLab	oklab(52.02% 0.1369 0.0923)
OKLCH	oklch(52.02% 0.165 34)
XYZ	xyz(20.4486, 12.6186, 2.4573)
Luminance	0.1262 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4381C #1C98B4

analogous

#B41C4C #B4381C #B4841C

triadic

#B4381C #1CB438 #381CB4

tetradic

#B4381C #4CB41C #1C98B4 #841CB4

square

#B4381C #4CB41C #1C98B4 #841CB4

split-complementary

#B4381C #1CB484 #1C4CB4

monochromatic

#4A170C #7F2814 #B4381C #DF4F2F #E77C64

Accessibility & contrast

On white

5.96

#B4381C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B4381C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4381C

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4381C	#FFFFFF	#000000	##FFFFFF
##B4381C	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)

#5D5217

Deuteranopia (green-blind)

#7B6E15

Tritanopia (blue-blind)

#C70933

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b4381c;
/* rgb */ color: rgb(180, 56, 28);
/* oklch */ color: oklch(52.0% 0.165 34.0);

Tailwind

colors: {
  custom: {
    50: '#d4765b',
    500: '#b4381c',
    950: '#000000',
  },
}

SCSS

$custom: #b4381c;
$custom-light: #d4765b;
$custom-dark: #000000;

JSON

{
  "hex": "#b4381c",
  "rgb": {
    "r": 180,
    "g": 56,
    "b": 28
  },
  "hsl": {
    "h": 11.053,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.52018,
    "c": 0.16508,
    "h": 34
  },
  "luminance": 0.12615
}

Semantic roles & 50–950 ramp

primary

#B4381C

secondary

#60B8CC

accent

#CEF038

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B4381C

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

Preview Lab → · Contrast checker → · Palette generator →