#BB3A37#BB3A37

#BB3A37 is a mid, vivid red. Relative luminance 0.139; OKLCH L 53.7% C 0.166 H 25.8°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#BB3A37
RGB	rgb(187, 58, 55)
HSL	hsl(1, 55%, 47%)
HSV	hsv(1, 71%, 73%)
CMYK	cmyk(0%, 69%, 70.6%, 26.7%)
CIE-LAB	lab(44.05, 51.39, 31.45)
CIE-LCH	lch(44.05, 60.25, 31.47°)
OKLab	oklab(53.74% 0.1495 0.0723)
OKLCH	oklch(53.74% 0.166 25.8)
XYZ	xyz(22.6986, 13.8701, 5.0957)
Luminance	0.1387 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3A37 #37B8BB

analogous

#BB3776 #BB3A37 #BB7C37

triadic

#BB3A37 #37BB3A #3A37BB

tetradic

#BB3A37 #76BB37 #37B8BB #7C37BB

square

#BB3A37 #76BB37 #37B8BB #7C37BB

split-complementary

#BB3A37 #37BB7C #3776BB

monochromatic

#5C1D1B #8C2B29 #BB3A37 #D0625F #DE908E

Accessibility & contrast

On white

5.57

#BB3A37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#BB3A37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3A37

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3A37	#FFFFFF	#000000	##FFFFFF
##BB3A37	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5635

Deuteranopia (green-blind)

#7E7233

Tritanopia (blue-blind)

#CD123B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bb3a37;
/* rgb */ color: rgb(187, 58, 55);
/* oklch */ color: oklch(53.7% 0.166 25.8);

Tailwind

colors: {
  custom: {
    50: '#d7786e',
    500: '#bb3a37',
    950: '#000000',
  },
}

SCSS

$custom: #bb3a37;
$custom-light: #d7786e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3a37",
  "rgb": {
    "r": 187,
    "g": 58,
    "b": 55
  },
  "hsl": {
    "h": 1.364,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53742,
    "c": 0.16602,
    "h": 25.8
  },
  "luminance": 0.13867
}

Semantic roles & 50–950 ramp

primary

#BB3A37

secondary

#85C7C9

accent

#DBDE4A

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3A37

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

Preview Lab → · Contrast checker → · Palette generator →