#BC3637#BC3637

#BC3637 is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.5% C 0.171 H 24.7°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#BC3637
RGB	rgb(188, 54, 55)
HSL	hsl(360, 55%, 47%)
HSV	hsv(360, 71%, 74%)
CMYK	cmyk(0%, 71.3%, 70.7%, 26.3%)
CIE-LAB	lab(43.67, 53.26, 31.05)
CIE-LCH	lch(43.67, 61.65, 30.24°)
OKLab	oklab(53.49% 0.1552 0.0714)
OKLCH	oklch(53.49% 0.171 24.7)
XYZ	xyz(22.7503, 13.6089, 5.0425)
Luminance	0.1361 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BC3637 #36BCBB

analogous

#BC367A #BC3637 #BC7836

triadic

#BC3637 #37BC36 #3637BC

tetradic

#BC3637 #7ABC36 #36BCBB #7836BC

square

#BC3637 #7ABC36 #36BCBB #7836BC

split-complementary

#BC3637 #36BC78 #367ABC

monochromatic

#5D1B1B #8C2829 #BC3637 #D15E5F #DF8E8E

Accessibility & contrast

On white

5.64

#BC3637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#BC3637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BC3637

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BC3637	#FFFFFF	#000000	##FFFFFF
##BC3637	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5536

Deuteranopia (green-blind)

#7E7233

Tritanopia (blue-blind)

#CF0238

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bc3637;
/* rgb */ color: rgb(188, 54, 55);
/* oklch */ color: oklch(53.5% 0.171 24.7);

Tailwind

colors: {
  custom: {
    50: '#d8766e',
    500: '#bc3637',
    950: '#000000',
  },
}

SCSS

$custom: #bc3637;
$custom-light: #d8766e;
$custom-dark: #000000;

JSON

{
  "hex": "#bc3637",
  "rgb": {
    "r": 188,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.552,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53492,
    "c": 0.17086,
    "h": 24.7
  },
  "luminance": 0.13606
}

Semantic roles & 50–950 ramp

primary

#BC3637

secondary

#85C9C9

accent

#DFDE49

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BC3637

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

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