#BB4037#BB4037

#BB4037 is a mid, vivid red. Relative luminance 0.145; OKLCH L 54.4% C 0.160 H 27.8°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#BB4037
RGB	rgb(187, 64, 55)
HSL	hsl(4, 55%, 47%)
HSV	hsv(4, 71%, 73%)
CMYK	cmyk(0%, 65.8%, 70.6%, 26.7%)
CIE-LAB	lab(44.96, 48.92, 32.52)
CIE-LCH	lch(44.96, 58.74, 33.62°)
OKLab	oklab(54.42% 0.1417 0.0747)
OKLCH	oklch(54.42% 0.16 27.8)
XYZ	xyz(23.0189, 14.5107, 5.2024)
Luminance	0.1451 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB4037 #37B2BB

analogous

#BB3770 #BB4037 #BB8237

triadic

#BB4037 #37BB40 #4037BB

tetradic

#BB4037 #70BB37 #37B2BB #8237BB

square

#BB4037 #70BB37 #37B2BB #8237BB

split-complementary

#BB4037 #37BB82 #3770BB

monochromatic

#5C201B #8C3029 #BB4037 #D0675F #DE948E

Accessibility & contrast

On white

5.38

#BB4037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#BB4037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB4037

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB4037	#FFFFFF	#000000	##FFFFFF
##BB4037	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#625935

Deuteranopia (green-blind)

#817433

Tritanopia (blue-blind)

#CD203F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #bb4037;
/* rgb */ color: rgb(187, 64, 55);
/* oklch */ color: oklch(54.4% 0.160 27.8);

Tailwind

colors: {
  custom: {
    50: '#d77b6e',
    500: '#bb4037',
    950: '#000000',
  },
}

SCSS

$custom: #bb4037;
$custom-light: #d77b6e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb4037",
  "rgb": {
    "r": 187,
    "g": 64,
    "b": 55
  },
  "hsl": {
    "h": 4.091,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.54424,
    "c": 0.16013,
    "h": 27.8
  },
  "luminance": 0.14507
}

Semantic roles & 50–950 ramp

primary

#BB4037

secondary

#85C4C9

accent

#D4DE4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #BB4037

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

Preview Lab → · Contrast checker → · Palette generator →