#BB3337#BB3337

#BB3337 is a mid, vivid red. Relative luminance 0.132; OKLCH L 53.0% C 0.173 H 23.9°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#BB3337
RGB	rgb(187, 51, 55)
HSL	hsl(358, 57%, 47%)
HSV	hsv(358, 73%, 73%)
CMYK	cmyk(0%, 72.7%, 70.6%, 26.7%)
CIE-LAB	lab(43.08, 54.05, 30.31)
CIE-LCH	lch(43.08, 61.97, 29.28°)
OKLab	oklab(53.02% 0.1579 0.0698)
OKLCH	oklch(53.02% 0.173 23.9)
XYZ	xyz(22.3694, 13.2117, 4.9859)
Luminance	0.1321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3337 #33BBB7

analogous

#BB337B #BB3337 #BB7333

triadic

#BB3337 #37BB33 #3337BB

tetradic

#BB3337 #7BBB33 #33BBB7 #7333BB

square

#BB3337 #7BBB33 #33BBB7 #7333BB

split-complementary

#BB3337 #33BB73 #337BBB

monochromatic

#5B191B #8B2629 #BB3337 #D2595D #DF898C

Accessibility & contrast

On white

5.77

#BB3337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#BB3337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3337

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3337	#FFFFFF	#000000	##FFFFFF
##BB3337	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5336

Deuteranopia (green-blind)

#7C7033

Tritanopia (blue-blind)

#CE0036

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #bb3337;
/* rgb */ color: rgb(187, 51, 55);
/* oklch */ color: oklch(53.0% 0.173 23.9);

Tailwind

colors: {
  custom: {
    50: '#d8756e',
    500: '#bb3337',
    950: '#000000',
  },
}

SCSS

$custom: #bb3337;
$custom-light: #d8756e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3337",
  "rgb": {
    "r": 187,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.235,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53021,
    "c": 0.17259,
    "h": 23.9
  },
  "luminance": 0.13208
}

Semantic roles & 50–950 ramp

primary

#BB3337

secondary

#81C9C7

accent

#E0DC47

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3337

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

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