#BB3B37#BB3B37

#BB3B37 is a mid, vivid red. Relative luminance 0.140; OKLCH L 53.9% C 0.165 H 26.1°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#BB3B37
RGB	rgb(187, 59, 55)
HSL	hsl(2, 55%, 47%)
HSV	hsv(2, 71%, 73%)
CMYK	cmyk(0%, 68.4%, 70.6%, 26.7%)
CIE-LAB	lab(44.19, 50.99, 31.63)
CIE-LCH	lch(44.19, 60.00, 31.81°)
OKLab	oklab(53.85% 0.1482 0.0727)
OKLCH	oklch(53.85% 0.165 26.1)
XYZ	xyz(22.7495, 13.9719, 5.1126)
Luminance	0.1397 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3B37 #37B7BB

analogous

#BB3775 #BB3B37 #BB7D37

triadic

#BB3B37 #37BB3B #3B37BB

tetradic

#BB3B37 #75BB37 #37B7BB #7D37BB

square

#BB3B37 #75BB37 #37B7BB #7D37BB

split-complementary

#BB3B37 #37BB7D #3775BB

monochromatic

#5C1D1B #8C2C29 #BB3B37 #D0635F #DE918E

Accessibility & contrast

On white

5.54

#BB3B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#BB3B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3B37

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3B37	#FFFFFF	#000000	##FFFFFF
##BB3B37	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5735

Deuteranopia (green-blind)

#7F7333

Tritanopia (blue-blind)

#CD153B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bb3b37;
/* rgb */ color: rgb(187, 59, 55);
/* oklch */ color: oklch(53.9% 0.165 26.1);

Tailwind

colors: {
  custom: {
    50: '#d7796e',
    500: '#bb3b37',
    950: '#000000',
  },
}

SCSS

$custom: #bb3b37;
$custom-light: #d7796e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3b37",
  "rgb": {
    "r": 187,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 1.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53851,
    "c": 0.16505,
    "h": 26.1
  },
  "luminance": 0.13969
}

Semantic roles & 50–950 ramp

primary

#BB3B37

secondary

#85C6C9

accent

#D9DE4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3B37

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

Preview Lab → · Contrast checker → · Palette generator →