#BC3737#BC3737

#BC3737 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.6% C 0.170 H 25.0°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#BC3737
RGB	rgb(188, 55, 55)
HSL	hsl(0, 55%, 48%)
HSV	hsv(0, 71%, 74%)
CMYK	cmyk(0%, 70.7%, 70.7%, 26.3%)
CIE-LAB	lab(43.80, 52.88, 31.21)
CIE-LCH	lch(43.80, 61.41, 30.55°)
OKLab	oklab(53.59% 0.154 0.0717)
OKLCH	oklch(53.59% 0.17 25)
XYZ	xyz(22.7973, 13.7030, 5.0582)
Luminance	0.1370 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BC3737 #37BCBC

analogous

#BC3779 #BC3737 #BC7937

triadic

#BC3737 #37BC37 #3737BC

tetradic

#BC3737 #79BC37 #37BCBC #7937BC

square

#BC3737 #79BC37 #37BCBC #7937BC

split-complementary

#BC3737 #37BC79 #3779BC

monochromatic

#5D1B1B #8D2929 #BC3737 #D06060 #DE8F8F

Accessibility & contrast

On white

5.61

#BC3737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#BC3737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BC3737

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BC3737	#FFFFFF	#000000	##FFFFFF
##BC3737	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5536

Deuteranopia (green-blind)

#7E7233

Tritanopia (blue-blind)

#CF0639

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bc3737;
/* rgb */ color: rgb(188, 55, 55);
/* oklch */ color: oklch(53.6% 0.170 25.0);

Tailwind

colors: {
  custom: {
    50: '#d8776e',
    500: '#bc3737',
    950: '#000000',
  },
}

SCSS

$custom: #bc3737;
$custom-light: #d8776e;
$custom-dark: #000000;

JSON

{
  "hex": "#bc3737",
  "rgb": {
    "r": 188,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53594,
    "c": 0.16993,
    "h": 25
  },
  "luminance": 0.137
}

Semantic roles & 50–950 ramp

primary

#BC3737

secondary

#86C9C9

accent

#DEDE4A

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BC3737

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

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