#BB3747#BB3747

#BB3747 is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.7% C 0.168 H 18.2°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#BB3747
RGB	rgb(187, 55, 71)
HSL	hsl(353, 55%, 47%)
HSV	hsv(353, 71%, 73%)
CMYK	cmyk(0%, 70.6%, 62%, 26.7%)
CIE-LAB	lab(43.88, 53.47, 21.61)
CIE-LCH	lch(43.88, 57.67, 22.00°)
OKLab	oklab(53.7% 0.1593 0.0523)
OKLCH	oklch(53.7% 0.168 18.2)
XYZ	xyz(22.9994, 13.7554, 7.4040)
Luminance	0.1375 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3747 #37BBAB

analogous

#BB3789 #BB3747 #BB6937

triadic

#BB3747 #47BB37 #3747BB

tetradic

#BB3747 #89BB37 #37BBAB #6937BB

square

#BB3747 #89BB37 #37BBAB #6937BB

split-complementary

#BB3747 #37BB69 #3789BB

monochromatic

#5C1B23 #8C2935 #BB3747 #D05F6D #DE8E98

Accessibility & contrast

On white

5.60

#BB3747 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#BB3747 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3747

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3747	#FFFFFF	#000000	##FFFFFF
##BB3747	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5647

Deuteranopia (green-blind)

#7C7243

Tritanopia (blue-blind)

#CD123E

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bb3747;
/* rgb */ color: rgb(187, 55, 71);
/* oklch */ color: oklch(53.7% 0.168 18.2);

Tailwind

colors: {
  custom: {
    50: '#d6777a',
    500: '#bb3747',
    950: '#000000',
  },
}

SCSS

$custom: #bb3747;
$custom-light: #d6777a;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3747",
  "rgb": {
    "r": 187,
    "g": 55,
    "b": 71
  },
  "hsl": {
    "h": 352.727,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53701,
    "c": 0.16765,
    "h": 18.2
  },
  "luminance": 0.13752
}

Semantic roles & 50–950 ramp

primary

#BB3747

secondary

#85C9C0

accent

#DECC4A

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160909

muted

#847B7B

Preview Lab

Preview with #BB3747

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

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