#BB3939#BB3939

#BB3939 is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.7% C 0.167 H 24.7°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#BB3939
RGB	rgb(187, 57, 57)
HSL	hsl(0, 53%, 48%)
HSV	hsv(0, 70%, 73%)
CMYK	cmyk(0%, 69.5%, 69.5%, 26.7%)
CIE-LAB	lab(43.93, 51.89, 30.14)
CIE-LCH	lch(43.93, 60.00, 30.15°)
OKLab	oklab(53.66% 0.1514 0.0698)
OKLCH	oklch(53.66% 0.167 24.7)
XYZ	xyz(22.6976, 13.7898, 5.3366)
Luminance	0.1379 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3939 #39BBBB

analogous

#BB397A #BB3939 #BB7A39

triadic

#BB3939 #39BB39 #3939BB

tetradic

#BB3939 #7ABB39 #39BBBB #7A39BB

square

#BB3939 #7ABB39 #39BBBB #7A39BB

split-complementary

#BB3939 #39BB7A #397ABB

monochromatic

#5D1C1C #8C2B2B #BB3939 #CF6262 #DD9191

Accessibility & contrast

On white

5.59

#BB3939 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#BB3939 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3939

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3939	#FFFFFF	#000000	##FFFFFF
##BB3939	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5638

Deuteranopia (green-blind)

#7E7235

Tritanopia (blue-blind)

#CD103B

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bb3939;
/* rgb */ color: rgb(187, 57, 57);
/* oklch */ color: oklch(53.7% 0.167 24.7);

Tailwind

colors: {
  custom: {
    50: '#d7786f',
    500: '#bb3939',
    950: '#000000',
  },
}

SCSS

$custom: #bb3939;
$custom-light: #d7786f;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3939",
  "rgb": {
    "r": 187,
    "g": 57,
    "b": 57
  },
  "hsl": {
    "h": 0,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53664,
    "c": 0.16673,
    "h": 24.7
  },
  "luminance": 0.13786
}

Semantic roles & 50–950 ramp

primary

#BB3939

secondary

#87C8C8

accent

#DDDD4B

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3939

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

Preview Lab → · Contrast checker → · Palette generator →