#BB3743#BB3743

#BB3743 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.6% C 0.168 H 20.0°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#BB3743
RGB	rgb(187, 55, 67)
HSL	hsl(355, 55%, 47%)
HSV	hsv(355, 71%, 73%)
CMYK	cmyk(0%, 70.6%, 64.2%, 26.7%)
CIE-LAB	lab(43.81, 53.22, 23.96)
CIE-LCH	lch(43.81, 58.37, 24.24°)
OKLab	oklab(53.62% 0.1577 0.0573)
OKLCH	oklch(53.62% 0.168 20)
XYZ	xyz(22.8752, 13.7057, 6.7500)
Luminance	0.1370 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3743 #37BBAF

analogous

#BB3785 #BB3743 #BB6D37

triadic

#BB3743 #43BB37 #3743BB

tetradic

#BB3743 #85BB37 #37BBAF #6D37BB

square

#BB3743 #85BB37 #37BBAF #6D37BB

split-complementary

#BB3743 #37BB6D #3785BB

monochromatic

#5C1B21 #8C2932 #BB3743 #D05F69 #DE8E96

Accessibility & contrast

On white

5.61

#BB3743 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#BB3743 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3743

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3743	#FFFFFF	#000000	##FFFFFF
##BB3743	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)

#5B5642

Deuteranopia (green-blind)

#7C723F

Tritanopia (blue-blind)

#CD0F3C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3743;
/* rgb */ color: rgb(187, 55, 67);
/* oklch */ color: oklch(53.6% 0.168 20.0);

Tailwind

colors: {
  custom: {
    50: '#d77777',
    500: '#bb3743',
    950: '#000000',
  },
}

SCSS

$custom: #bb3743;
$custom-light: #d77777;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3743",
  "rgb": {
    "r": 187,
    "g": 55,
    "b": 67
  },
  "hsl": {
    "h": 354.545,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53624,
    "c": 0.1678,
    "h": 20
  },
  "luminance": 0.13702
}

Semantic roles & 50–950 ramp

primary

#BB3743

secondary

#85C9C2

accent

#DED04A

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #BB3743

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

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