#BB3734#BB3734

#BB3734 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.4% C 0.169 H 26.1°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#BB3734
RGB	rgb(187, 55, 52)
HSL	hsl(1, 56%, 47%)
HSV	hsv(1, 72%, 73%)
CMYK	cmyk(0%, 70.6%, 72.2%, 26.7%)
CIE-LAB	lab(43.58, 52.42, 32.67)
CIE-LCH	lch(43.58, 61.76, 31.93°)
OKLab	oklab(53.38% 0.1521 0.0744)
OKLCH	oklch(53.38% 0.169 26.1)
XYZ	xyz(22.4820, 13.5485, 4.6795)
Luminance	0.1354 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3734 #34B8BB

analogous

#BB3475 #BB3734 #BB7A34

triadic

#BB3734 #34BB37 #3734BB

tetradic

#BB3734 #75BB34 #34B8BB #7A34BB

square

#BB3734 #75BB34 #34B8BB #7A34BB

split-complementary

#BB3734 #34BB7A #3475BB

monochromatic

#5B1B19 #8B2927 #BB3734 #D15D5B #DF8D8B

Accessibility & contrast

On white

5.66

#BB3734 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#BB3734 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3734

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3734	#FFFFFF	#000000	##FFFFFF
##BB3734	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5532

Deuteranopia (green-blind)

#7E7130

Tritanopia (blue-blind)

#CE0538

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3734;
/* rgb */ color: rgb(187, 55, 52);
/* oklch */ color: oklch(53.4% 0.169 26.1);

Tailwind

colors: {
  custom: {
    50: '#d8776c',
    500: '#bb3734',
    950: '#000000',
  },
}

SCSS

$custom: #bb3734;
$custom-light: #d8776c;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3734",
  "rgb": {
    "r": 187,
    "g": 55,
    "b": 52
  },
  "hsl": {
    "h": 1.333,
    "s": 56.485,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53379,
    "c": 0.16928,
    "h": 26.1
  },
  "luminance": 0.13545
}

Semantic roles & 50–950 ramp

primary

#BB3734

secondary

#82C7C9

accent

#DCE048

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3734

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

Preview Lab → · Contrast checker → · Palette generator →