#BB3F37#BB3F37

#BB3F37 is a mid, vivid red. Relative luminance 0.144; OKLCH L 54.3% C 0.161 H 27.4°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#BB3F37
RGB	rgb(187, 63, 55)
HSL	hsl(4, 55%, 47%)
HSV	hsv(4, 71%, 73%)
CMYK	cmyk(0%, 66.3%, 70.6%, 26.7%)
CIE-LAB	lab(44.80, 49.34, 32.34)
CIE-LCH	lch(44.80, 59.00, 33.24°)
OKLab	oklab(54.31% 0.143 0.0743)
OKLCH	oklch(54.31% 0.161 27.4)
XYZ	xyz(22.9631, 14.3989, 5.1838)
Luminance	0.1440 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3F37 #37B3BB

analogous

#BB3771 #BB3F37 #BB8137

triadic

#BB3F37 #37BB3F #3F37BB

tetradic

#BB3F37 #71BB37 #37B3BB #8137BB

square

#BB3F37 #71BB37 #37B3BB #8137BB

split-complementary

#BB3F37 #37BB81 #3771BB

monochromatic

#5C1F1B #8C2F29 #BB3F37 #D0665F #DE938E

Accessibility & contrast

On white

5.41

#BB3F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#BB3F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3F37

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3F37	#FFFFFF	#000000	##FFFFFF
##BB3F37	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615935

Deuteranopia (green-blind)

#807433

Tritanopia (blue-blind)

#CD1E3E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #bb3f37;
/* rgb */ color: rgb(187, 63, 55);
/* oklch */ color: oklch(54.3% 0.161 27.4);

Tailwind

colors: {
  custom: {
    50: '#d77b6e',
    500: '#bb3f37',
    950: '#000000',
  },
}

SCSS

$custom: #bb3f37;
$custom-light: #d77b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3f37",
  "rgb": {
    "r": 187,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 3.636,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.54306,
    "c": 0.16112,
    "h": 27.4
  },
  "luminance": 0.14396
}

Semantic roles & 50–950 ramp

primary

#BB3F37

secondary

#85C4C9

accent

#D5DE4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #BB3F37

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

Preview Lab → · Contrast checker → · Palette generator →