#BB3333#BB3333

#BB3333 is a mid, vivid red. Relative luminance 0.132; OKLCH L 53.0% C 0.173 H 25.3°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#BB3333
RGB	rgb(187, 51, 51)
HSL	hsl(0, 57%, 47%)
HSV	hsv(0, 73%, 73%)
CMYK	cmyk(0%, 72.7%, 72.7%, 26.7%)
CIE-LAB	lab(43.03, 53.86, 32.61)
CIE-LCH	lch(43.03, 62.96, 31.20°)
OKLab	oklab(52.96% 0.1564 0.0741)
OKLCH	oklch(52.96% 0.173 25.3)
XYZ	xyz(22.2774, 13.1748, 4.5013)
Luminance	0.1317 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3333 #33BBBB

analogous

#BB3377 #BB3333 #BB7733

triadic

#BB3333 #33BB33 #3333BB

tetradic

#BB3333 #77BB33 #33BBBB #7733BB

square

#BB3333 #77BB33 #33BBBB #7733BB

split-complementary

#BB3333 #33BB77 #3377BB

monochromatic

#5B1919 #8B2626 #BB3333 #D25959 #DF8989

Accessibility & contrast

On white

5.78

#BB3333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#BB3333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3333

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3333	#FFFFFF	#000000	##FFFFFF
##BB3333	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5332

Deuteranopia (green-blind)

#7D702E

Tritanopia (blue-blind)

#CE0035

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #bb3333;
/* rgb */ color: rgb(187, 51, 51);
/* oklch */ color: oklch(53.0% 0.173 25.3);

Tailwind

colors: {
  custom: {
    50: '#d8756b',
    500: '#bb3333',
    950: '#000000',
  },
}

SCSS

$custom: #bb3333;
$custom-light: #d8756b;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3333",
  "rgb": {
    "r": 187,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52962,
    "c": 0.17306,
    "h": 25.3
  },
  "luminance": 0.13171
}

Semantic roles & 50–950 ramp

primary

#BB3333

secondary

#81C9C9

accent

#E0E047

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #BB3333

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

Preview Lab → · Contrast checker → · Palette generator →