#BB3F1B#BB3F1B

#BB3F1B is a mid, vivid red. Relative luminance 0.142; OKLCH L 54.0% C 0.166 H 36.0°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#BB3F1B
RGB	rgb(187, 63, 27)
HSL	hsl(14, 75%, 42%)
HSV	hsv(14, 86%, 73%)
CMYK	cmyk(0%, 66.3%, 85.6%, 26.7%)
CIE-LAB	lab(44.52, 48.30, 46.79)
CIE-LCH	lch(44.52, 67.25, 44.09°)
OKLab	oklab(54.01% 0.1345 0.0979)
OKLCH	oklch(54.01% 0.166 36)
XYZ	xyz(22.4715, 14.2023, 2.5948)
Luminance	0.1420 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3F1B #1B97BB

analogous

#BB1B47 #BB3F1B #BB8F1B

triadic

#BB3F1B #1BBB3F #3F1BBB

tetradic

#BB3F1B #47BB1B #1B97BB #8F1BBB

square

#BB3F1B #47BB1B #1B97BB #8F1BBB

split-complementary

#BB3F1B #1BBB8F #1B47BB

monochromatic

#501B0C #862D13 #BB3F1B #E15932 #E98567

Accessibility & contrast

On white

5.47

#BB3F1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#BB3F1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3F1B

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3F1B	#FFFFFF	#000000	##FFFFFF
##BB3F1B	1.00	5.47	3.84	5.47
#FFFFFF	5.47	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#635814

Deuteranopia (green-blind)

#827414

Tritanopia (blue-blind)

#CE1838

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #bb3f1b;
/* rgb */ color: rgb(187, 63, 27);
/* oklch */ color: oklch(54.0% 0.166 36.0);

Tailwind

colors: {
  custom: {
    50: '#d97a5c',
    500: '#bb3f1b',
    950: '#000000',
  },
}

SCSS

$custom: #bb3f1b;
$custom-light: #d97a5c;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3f1b",
  "rgb": {
    "r": 187,
    "g": 63,
    "b": 27
  },
  "hsl": {
    "h": 13.5,
    "s": 74.766,
    "l": 41.961
  },
  "oklch": {
    "l": 0.54009,
    "c": 0.16636,
    "h": 36
  },
  "luminance": 0.14199
}

Semantic roles & 50–950 ramp

primary

#BB3F1B

secondary

#63B6CE

accent

#C7F136

background

#FEF7F5

surface

#FDEEE9

border

#D5C9C5

text

#170A04

muted

#857C79

Preview Lab

Preview with #BB3F1B

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

Preview Lab → · Contrast checker → · Palette generator →