#BC3740#BC3740

#BC3740 is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.7% C 0.169 H 21.3°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#BC3740
RGB	rgb(188, 55, 64)
HSL	hsl(356, 55%, 48%)
HSV	hsv(356, 71%, 74%)
CMYK	cmyk(0%, 70.7%, 66%, 26.3%)
CIE-LAB	lab(43.94, 53.36, 25.99)
CIE-LCH	lch(43.94, 59.36, 25.97°)
OKLab	oklab(53.74% 0.1574 0.0615)
OKLCH	oklch(53.74% 0.169 21.3)
XYZ	xyz(23.0331, 13.7973, 6.2998)
Luminance	0.1379 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BC3740 #37BCB3

analogous

#BC3782 #BC3740 #BC7137

triadic

#BC3740 #40BC37 #3740BC

tetradic

#BC3740 #82BC37 #37BCB3 #7137BC

square

#BC3740 #82BC37 #37BCB3 #7137BC

split-complementary

#BC3740 #37BC71 #3782BC

monochromatic

#5D1B20 #8D2930 #BC3740 #D06067 #DE8F94

Accessibility & contrast

On white

5.59

#BC3740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#BC3740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BC3740

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BC3740	#FFFFFF	#000000	##FFFFFF
##BC3740	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563F

Deuteranopia (green-blind)

#7D723C

Tritanopia (blue-blind)

#CE0C3B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bc3740;
/* rgb */ color: rgb(188, 55, 64);
/* oklch */ color: oklch(53.7% 0.169 21.3);

Tailwind

colors: {
  custom: {
    50: '#d87774',
    500: '#bc3740',
    950: '#000000',
  },
}

SCSS

$custom: #bc3740;
$custom-light: #d87774;
$custom-dark: #000000;

JSON

{
  "hex": "#bc3740",
  "rgb": {
    "r": 188,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.94,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.5374,
    "c": 0.16901,
    "h": 21.3
  },
  "luminance": 0.13794
}

Semantic roles & 50–950 ramp

primary

#BC3740

secondary

#86C9C4

accent

#DED44A

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #BC3740

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

Preview Lab → · Contrast checker → · Palette generator →