#BB3539#BB3539

#BB3539 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.2% C 0.171 H 23.6°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#BB3539
RGB	rgb(187, 53, 57)
HSL	hsl(358, 56%, 47%)
HSV	hsv(358, 72%, 73%)
CMYK	cmyk(0%, 71.7%, 69.5%, 26.7%)
CIE-LAB	lab(43.37, 53.41, 29.47)
CIE-LCH	lch(43.37, 61.00, 28.88°)
OKLab	oklab(53.25% 0.1563 0.0683)
OKLCH	oklch(53.25% 0.171 23.6)
XYZ	xyz(22.5076, 13.4098, 5.2733)
Luminance	0.1341 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3539 #35BBB7

analogous

#BB357C #BB3539 #BB7435

triadic

#BB3539 #39BB35 #3539BB

tetradic

#BB3539 #7CBB35 #35BBB7 #7435BB

square

#BB3539 #7CBB35 #35BBB7 #7435BB

split-complementary

#BB3539 #35BB74 #357CBB

monochromatic

#5C1A1C #8B272A #BB3539 #D15C60 #DE8C8E

Accessibility & contrast

On white

5.70

#BB3539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#BB3539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3539

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3539	#FFFFFF	#000000	##FFFFFF
##BB3539	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)

#5B5438

Deuteranopia (green-blind)

#7D7135

Tritanopia (blue-blind)

#CE0138

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #bb3539;
/* rgb */ color: rgb(187, 53, 57);
/* oklch */ color: oklch(53.2% 0.171 23.6);

Tailwind

colors: {
  custom: {
    50: '#d7766f',
    500: '#bb3539',
    950: '#000000',
  },
}

SCSS

$custom: #bb3539;
$custom-light: #d7766f;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3539",
  "rgb": {
    "r": 187,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.209,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53249,
    "c": 0.17054,
    "h": 23.6
  },
  "luminance": 0.13406
}

Semantic roles & 50–950 ramp

primary

#BB3539

secondary

#83C9C7

accent

#DFDB49

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3539

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

Preview Lab → · Contrast checker → · Palette generator →