#BC3437#BC3437

#BC3437 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.3% C 0.173 H 24.2°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#BC3437
RGB	rgb(188, 52, 55)
HSL	hsl(359, 57%, 47%)
HSV	hsv(359, 72%, 74%)
CMYK	cmyk(0%, 72.3%, 70.7%, 26.3%)
CIE-LAB	lab(43.40, 54.00, 30.73)
CIE-LCH	lch(43.40, 62.13, 29.65°)
OKLab	oklab(53.29% 0.1576 0.0707)
OKLCH	oklch(53.29% 0.173 24.2)
XYZ	xyz(22.6591, 13.4266, 5.0122)
Luminance	0.1342 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BC3437 #34BCB9

analogous

#BC347B #BC3437 #BC7534

triadic

#BC3437 #37BC34 #3437BC

tetradic

#BC3437 #7BBC34 #34BCB9 #7534BC

square

#BC3437 #7BBC34 #34BCB9 #7534BC

split-complementary

#BC3437 #34BC75 #347BBC

monochromatic

#5C191B #8C2729 #BC3437 #D25B5E #DF8B8D

Accessibility & contrast

On white

5.70

#BC3437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#BC3437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BC3437

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BC3437	#FFFFFF	#000000	##FFFFFF
##BC3437	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5436

Deuteranopia (green-blind)

#7D7133

Tritanopia (blue-blind)

#CF0037

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #bc3437;
/* rgb */ color: rgb(188, 52, 55);
/* oklch */ color: oklch(53.3% 0.173 24.2);

Tailwind

colors: {
  custom: {
    50: '#d8756e',
    500: '#bc3437',
    950: '#000000',
  },
}

SCSS

$custom: #bc3437;
$custom-light: #d8756e;
$custom-dark: #000000;

JSON

{
  "hex": "#bc3437",
  "rgb": {
    "r": 188,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.676,
    "s": 56.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53292,
    "c": 0.1727,
    "h": 24.2
  },
  "luminance": 0.13423
}

Semantic roles & 50–950 ramp

primary

#BC3437

secondary

#83C9C8

accent

#E0DD48

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BC3437

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

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