#BC3739#BC3739

#BC3739 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.6% C 0.170 H 24.2°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#BC3739
RGB	rgb(188, 55, 57)
HSL	hsl(359, 55%, 48%)
HSV	hsv(359, 71%, 74%)
CMYK	cmyk(0%, 70.7%, 69.7%, 26.3%)
CIE-LAB	lab(43.83, 52.98, 30.06)
CIE-LCH	lch(43.83, 60.92, 29.57°)
OKLab	oklab(53.63% 0.1548 0.0696)
OKLCH	oklch(53.63% 0.17 24.2)
XYZ	xyz(22.8462, 13.7225, 5.3158)
Luminance	0.1372 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BC3739 #37BCBA

analogous

#BC377B #BC3739 #BC7837

triadic

#BC3739 #39BC37 #3739BC

tetradic

#BC3739 #7BBC37 #37BCBA #7837BC

square

#BC3739 #7BBC37 #37BCBA #7837BC

split-complementary

#BC3739 #37BC78 #377BBC

monochromatic

#5D1B1C #8D292B #BC3739 #D06061 #DE8F90

Accessibility & contrast

On white

5.61

#BC3739 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#BC3739 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BC3739

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BC3739	#FFFFFF	#000000	##FFFFFF
##BC3739	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)

#5D5538

Deuteranopia (green-blind)

#7E7235

Tritanopia (blue-blind)

#CF0739

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bc3739;
/* rgb */ color: rgb(188, 55, 57);
/* oklch */ color: oklch(53.6% 0.170 24.2);

Tailwind

colors: {
  custom: {
    50: '#d8776f',
    500: '#bc3739',
    950: '#000000',
  },
}

SCSS

$custom: #bc3739;
$custom-light: #d8776f;
$custom-dark: #000000;

JSON

{
  "hex": "#bc3739",
  "rgb": {
    "r": 188,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 359.098,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53625,
    "c": 0.16969,
    "h": 24.2
  },
  "luminance": 0.13719
}

Semantic roles & 50–950 ramp

primary

#BC3739

secondary

#86C9C8

accent

#DEDC4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BC3739

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

Preview Lab → · Contrast checker → · Palette generator →