#BB3636#BB3636

#BB3636 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.3% C 0.170 H 25.0°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#BB3636
RGB	rgb(187, 54, 54)
HSL	hsl(0, 55%, 47%)
HSV	hsv(0, 71%, 73%)
CMYK	cmyk(0%, 71.1%, 71.1%, 26.7%)
CIE-LAB	lab(43.47, 52.89, 31.36)
CIE-LCH	lch(43.47, 61.49, 30.66°)
OKLab	oklab(53.31% 0.154 0.0719)
OKLCH	oklch(53.31% 0.17 25)
XYZ	xyz(22.4810, 13.4728, 4.9061)
Luminance	0.1347 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3636 #36BBBB

analogous

#BB3679 #BB3636 #BB7936

triadic

#BB3636 #36BB36 #3636BB

tetradic

#BB3636 #79BB36 #36BBBB #7936BB

square

#BB3636 #79BB36 #36BBBB #7936BB

split-complementary

#BB3636 #36BB79 #3679BB

monochromatic

#5C1B1B #8C2828 #BB3636 #D05E5E #DE8D8D

Accessibility & contrast

On white

5.69

#BB3636 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#BB3636 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3636

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3636	#FFFFFF	#000000	##FFFFFF
##BB3636	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5435

Deuteranopia (green-blind)

#7D7132

Tritanopia (blue-blind)

#CE0338

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3636;
/* rgb */ color: rgb(187, 54, 54);
/* oklch */ color: oklch(53.3% 0.170 25.0);

Tailwind

colors: {
  custom: {
    50: '#d7766d',
    500: '#bb3636',
    950: '#000000',
  },
}

SCSS

$custom: #bb3636;
$custom-light: #d7766d;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3636",
  "rgb": {
    "r": 187,
    "g": 54,
    "b": 54
  },
  "hsl": {
    "h": 0,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53305,
    "c": 0.16995,
    "h": 25
  },
  "luminance": 0.13469
}

Semantic roles & 50–950 ramp

primary

#BB3636

secondary

#84C9C9

accent

#DFDF49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3636

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

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