#BF3737#BF3737

#BF3737 is a mid, vivid red. Relative luminance 0.141; OKLCH L 54.1% C 0.173 H 25.1°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#BF3737
RGB	rgb(191, 55, 55)
HSL	hsl(0, 55%, 48%)
HSV	hsv(0, 71%, 75%)
CMYK	cmyk(0%, 71.2%, 71.2%, 25.1%)
CIE-LAB	lab(44.36, 53.85, 32.01)
CIE-LCH	lch(44.36, 62.64, 30.73°)
OKLab	oklab(54.11% 0.1567 0.0733)
OKLCH	oklch(54.11% 0.173 25.1)
XYZ	xyz(23.5442, 14.0881, 5.0932)
Luminance	0.1409 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BF3737 #37BFBF

analogous

#BF377B #BF3737 #BF7B37

triadic

#BF3737 #37BF37 #3737BF

tetradic

#BF3737 #7BBF37 #37BFBF #7B37BF

square

#BF3737 #7BBF37 #37BFBF #7B37BF

split-complementary

#BF3737 #37BF7B #377BBF

monochromatic

#601C1C #8F2929 #BF3737 #D26262 #DF9191

Accessibility & contrast

On white

5.50

#BF3737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#BF3737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BF3737

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BF3737	#FFFFFF	#000000	##FFFFFF
##BF3737	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5636

Deuteranopia (green-blind)

#807433

Tritanopia (blue-blind)

#D20139

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #bf3737;
/* rgb */ color: rgb(191, 55, 55);
/* oklch */ color: oklch(54.1% 0.173 25.1);

Tailwind

colors: {
  custom: {
    50: '#da776e',
    500: '#bf3737',
    950: '#000000',
  },
}

SCSS

$custom: #bf3737;
$custom-light: #da776e;
$custom-dark: #000000;

JSON

{
  "hex": "#bf3737",
  "rgb": {
    "r": 191,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.5411,
    "c": 0.17301,
    "h": 25.1
  },
  "luminance": 0.14085
}

Semantic roles & 50–950 ramp

primary

#BF3737

secondary

#88CACA

accent

#DFDF49

background

#FEF7F6

surface

#FDEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #BF3737

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

Preview Lab → · Contrast checker → · Palette generator →