#BB4537#BB4537

#BB4537 is a mid, vivid red. Relative luminance 0.151; OKLCH L 55.0% C 0.155 H 29.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#BB4537
RGB	rgb(187, 69, 55)
HSL	hsl(6, 55%, 47%)
HSV	hsv(6, 71%, 73%)
CMYK	cmyk(0%, 63.1%, 70.6%, 26.7%)
CIE-LAB	lab(45.77, 46.73, 33.47)
CIE-LCH	lch(45.77, 57.48, 35.61°)
OKLab	oklab(55.04% 0.1348 0.0767)
OKLCH	oklch(55.04% 0.155 29.7)
XYZ	xyz(23.3136, 15.1001, 5.3007)
Luminance	0.1510 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB4537 #37ADBB

analogous

#BB376B #BB4537 #BB8737

triadic

#BB4537 #37BB45 #4537BB

tetradic

#BB4537 #6BBB37 #37ADBB #8737BB

square

#BB4537 #6BBB37 #37ADBB #8737BB

split-complementary

#BB4537 #37BB87 #376BBB

monochromatic

#5C221B #8C3429 #BB4537 #D06B5F #DE978E

Accessibility & contrast

On white

5.22

#BB4537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#BB4537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB4537

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB4537	#FFFFFF	#000000	##FFFFFF
##BB4537	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#655C35

Deuteranopia (green-blind)

#827633

Tritanopia (blue-blind)

#CD2942

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #bb4537;
/* rgb */ color: rgb(187, 69, 55);
/* oklch */ color: oklch(55.0% 0.155 29.7);

Tailwind

colors: {
  custom: {
    50: '#d77e6e',
    500: '#bb4537',
    950: '#000000',
  },
}

SCSS

$custom: #bb4537;
$custom-light: #d77e6e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb4537",
  "rgb": {
    "r": 187,
    "g": 69,
    "b": 55
  },
  "hsl": {
    "h": 6.364,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.55036,
    "c": 0.15512,
    "h": 29.7
  },
  "luminance": 0.15097
}

Semantic roles & 50–950 ramp

primary

#BB4537

secondary

#85C1C9

accent

#CEDE4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #BB4537

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

Preview Lab → · Contrast checker → · Palette generator →