#BB3037#BB3037

#BB3037 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.175 H 23.1°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#BB3037
RGB	rgb(187, 48, 55)
HSL	hsl(357, 59%, 46%)
HSV	hsv(357, 74%, 73%)
CMYK	cmyk(0%, 74.3%, 70.6%, 26.7%)
CIE-LAB	lab(42.70, 55.10, 29.86)
CIE-LCH	lch(42.70, 62.67, 28.45°)
OKLab	oklab(52.74% 0.1612 0.0688)
OKLCH	oklch(52.74% 0.175 23.1)
XYZ	xyz(22.2426, 12.9579, 4.9436)
Luminance	0.1295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3037 #30BBB4

analogous

#BB307C #BB3037 #BB6E30

triadic

#BB3037 #37BB30 #3037BB

tetradic

#BB3037 #7CBB30 #30BBB4 #6E30BB

square

#BB3037 #7CBB30 #30BBB4 #6E30BB

split-complementary

#BB3037 #30BB6E #307CBB

monochromatic

#5A171A #8A2329 #BB3037 #D3555B #E0868A

Accessibility & contrast

On white

5.85

#BB3037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#BB3037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3037

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3037	#FFFFFF	#000000	##FFFFFF
##BB3037	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#7B7032

Tritanopia (blue-blind)

#CE0034

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb3037;
/* rgb */ color: rgb(187, 48, 55);
/* oklch */ color: oklch(52.7% 0.175 23.1);

Tailwind

colors: {
  custom: {
    50: '#d8736e',
    500: '#bb3037',
    950: '#000000',
  },
}

SCSS

$custom: #bb3037;
$custom-light: #d8736e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3037",
  "rgb": {
    "r": 187,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.978,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52737,
    "c": 0.17527,
    "h": 23.1
  },
  "luminance": 0.12955
}

Semantic roles & 50–950 ramp

primary

#BB3037

secondary

#7DC9C6

accent

#E2DA45

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3037

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

Preview Lab → · Contrast checker → · Palette generator →