#BB373F#BB373F

#BB373F is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.6% C 0.168 H 21.7°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#BB373F
RGB	rgb(187, 55, 63)
HSL	hsl(356, 55%, 47%)
HSV	hsv(356, 71%, 73%)
CMYK	cmyk(0%, 70.6%, 66.3%, 26.7%)
CIE-LAB	lab(43.74, 52.99, 26.31)
CIE-LCH	lch(43.74, 59.16, 26.40°)
OKLab	oklab(53.55% 0.1562 0.0621)
OKLCH	oklch(53.55% 0.168 21.7)
XYZ	xyz(22.7593, 13.6594, 6.1398)
Luminance	0.1366 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB373F #37BBB3

analogous

#BB3781 #BB373F #BB7137

triadic

#BB373F #3FBB37 #373FBB

tetradic

#BB373F #81BB37 #37BBB3 #7137BB

square

#BB373F #81BB37 #37BBB3 #7137BB

split-complementary

#BB373F #37BB71 #3781BB

monochromatic

#5C1B1F #8C292F #BB373F #D05F66 #DE8E93

Accessibility & contrast

On white

5.63

#BB373F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#BB373F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB373F

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB373F	#FFFFFF	#000000	##FFFFFF
##BB373F	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B553E

Deuteranopia (green-blind)

#7D723B

Tritanopia (blue-blind)

#CD0D3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb373f;
/* rgb */ color: rgb(187, 55, 63);
/* oklch */ color: oklch(53.6% 0.168 21.7);

Tailwind

colors: {
  custom: {
    50: '#d77774',
    500: '#bb373f',
    950: '#000000',
  },
}

SCSS

$custom: #bb373f;
$custom-light: #d77774;
$custom-dark: #000000;

JSON

{
  "hex": "#bb373f",
  "rgb": {
    "r": 187,
    "g": 55,
    "b": 63
  },
  "hsl": {
    "h": 356.364,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53552,
    "c": 0.16806,
    "h": 21.7
  },
  "luminance": 0.13656
}

Semantic roles & 50–950 ramp

primary

#BB373F

secondary

#85C9C4

accent

#DED54A

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #BB373F

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

Preview Lab → · Contrast checker → · Palette generator →