#BB3639#BB3639

#BB3639 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.3% C 0.170 H 23.9°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#BB3639
RGB	rgb(187, 54, 57)
HSL	hsl(359, 55%, 47%)
HSV	hsv(359, 71%, 73%)
CMYK	cmyk(0%, 71.1%, 69.5%, 26.7%)
CIE-LAB	lab(43.51, 53.04, 29.63)
CIE-LCH	lch(43.51, 60.76, 29.19°)
OKLab	oklab(53.35% 0.1551 0.0686)
OKLCH	oklch(53.35% 0.17 23.9)
XYZ	xyz(22.5537, 13.5019, 5.2886)
Luminance	0.1350 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3639 #36BBB8

analogous

#BB367B #BB3639 #BB7636

triadic

#BB3639 #39BB36 #3639BB

tetradic

#BB3639 #7BBB36 #36BBB8 #7636BB

square

#BB3639 #7BBB36 #36BBB8 #7636BB

split-complementary

#BB3639 #36BB76 #367BBB

monochromatic

#5C1B1C #8C282B #BB3639 #D05E60 #DE8D8F

Accessibility & contrast

On white

5.68

#BB3639 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#BB3639 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3639

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3639	#FFFFFF	#000000	##FFFFFF
##BB3639	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5538

Deuteranopia (green-blind)

#7D7135

Tritanopia (blue-blind)

#CD0539

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3639;
/* rgb */ color: rgb(187, 54, 57);
/* oklch */ color: oklch(53.3% 0.170 23.9);

Tailwind

colors: {
  custom: {
    50: '#d7766f',
    500: '#bb3639',
    950: '#000000',
  },
}

SCSS

$custom: #bb3639;
$custom-light: #d7766f;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3639",
  "rgb": {
    "r": 187,
    "g": 54,
    "b": 57
  },
  "hsl": {
    "h": 358.647,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5335,
    "c": 0.16959,
    "h": 23.9
  },
  "luminance": 0.13499
}

Semantic roles & 50–950 ramp

primary

#BB3639

secondary

#84C9C7

accent

#DFDB49

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3639

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

Preview Lab → · Contrast checker → · Palette generator →