#BB5737#BB5737

#BB5737 is a mid, vivid red. Relative luminance 0.177; OKLCH L 57.5% C 0.137 H 38.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#BB5737
RGB	rgb(187, 87, 55)
HSL	hsl(15, 55%, 47%)
HSV	hsv(15, 71%, 73%)
CMYK	cmyk(0%, 53.5%, 70.6%, 26.7%)
CIE-LAB	lab(49.08, 38.09, 37.27)
CIE-LCH	lch(49.08, 53.29, 44.38°)
OKLab	oklab(57.54% 0.108 0.085)
OKLCH	oklch(57.54% 0.137 38.2)
XYZ	xyz(24.5936, 17.6601, 5.7273)
Luminance	0.1766 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB5737 #379BBB

analogous

#BB3759 #BB5737 #BB9937

triadic

#BB5737 #37BB57 #5737BB

tetradic

#BB5737 #59BB37 #379BBB #9937BB

square

#BB5737 #59BB37 #379BBB #9937BB

split-complementary

#BB5737 #37BB99 #3759BB

monochromatic

#5C2B1B #8C4129 #BB5737 #D07B5F #DEA28E

Accessibility & contrast

On white

4.63

#BB5737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#BB5737 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #BB5737

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB5737	#FFFFFF	#000000	##FFFFFF
##BB5737	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726733

Deuteranopia (green-blind)

#8A7D35

Tritanopia (blue-blind)

#CD4350

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #bb5737;
/* rgb */ color: rgb(187, 87, 55);
/* oklch */ color: oklch(57.5% 0.137 38.2);

Tailwind

colors: {
  custom: {
    50: '#d6896f',
    500: '#bb5737',
    950: '#000000',
  },
}

SCSS

$custom: #bb5737;
$custom-light: #d6896f;
$custom-dark: #000000;

JSON

{
  "hex": "#bb5737",
  "rgb": {
    "r": 187,
    "g": 87,
    "b": 55
  },
  "hsl": {
    "h": 14.545,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.5754,
    "c": 0.13744,
    "h": 38.2
  },
  "luminance": 0.17657
}

Semantic roles & 50–950 ramp

primary

#BB5737

secondary

#85B8C9

accent

#BADE4A

background

#FEF8F6

surface

#FCF0EC

border

#D5CBC7

text

#160C07

muted

#847D7A

Preview Lab

Preview with #BB5737

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

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