#BB3633#BB3633

#BB3633 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.3% C 0.170 H 26.2°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#BB3633
RGB	rgb(187, 54, 51)
HSL	hsl(1, 57%, 47%)
HSV	hsv(1, 73%, 73%)
CMYK	cmyk(0%, 71.1%, 72.7%, 26.7%)
CIE-LAB	lab(43.43, 52.75, 33.08)
CIE-LCH	lch(43.43, 62.26, 32.09°)
OKLab	oklab(53.26% 0.1529 0.0751)
OKLCH	oklch(53.26% 0.17 26.2)
XYZ	xyz(22.4127, 13.4455, 4.5464)
Luminance	0.1344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3633 #33B8BB

analogous

#BB3374 #BB3633 #BB7A33

triadic

#BB3633 #33BB36 #3633BB

tetradic

#BB3633 #74BB33 #33B8BB #7A33BB

square

#BB3633 #74BB33 #33B8BB #7A33BB

split-complementary

#BB3633 #33BB7A #3374BB

monochromatic

#5B1A19 #8B2826 #BB3633 #D25C59 #DF8B89

Accessibility & contrast

On white

5.69

#BB3633 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#BB3633 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3633

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3633	#FFFFFF	#000000	##FFFFFF
##BB3633	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)

#5C5431

Deuteranopia (green-blind)

#7D712E

Tritanopia (blue-blind)

#CE0137

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3633;
/* rgb */ color: rgb(187, 54, 51);
/* oklch */ color: oklch(53.3% 0.170 26.2);

Tailwind

colors: {
  custom: {
    50: '#d8766b',
    500: '#bb3633',
    950: '#000000',
  },
}

SCSS

$custom: #bb3633;
$custom-light: #d8766b;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3633",
  "rgb": {
    "r": 187,
    "g": 54,
    "b": 51
  },
  "hsl": {
    "h": 1.324,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53262,
    "c": 0.17034,
    "h": 26.2
  },
  "luminance": 0.13442
}

Semantic roles & 50–950 ramp

primary

#BB3633

secondary

#81C7C9

accent

#DDE047

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #BB3633

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

Preview Lab → · Contrast checker → · Palette generator →