#BB3940#BB3940

#BB3940 is a mid, vivid red. Relative luminance 0.139; OKLCH L 53.8% C 0.166 H 21.8°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#BB3940
RGB	rgb(187, 57, 64)
HSL	hsl(357, 53%, 48%)
HSV	hsv(357, 70%, 73%)
CMYK	cmyk(0%, 69.5%, 65.8%, 26.7%)
CIE-LAB	lab(44.04, 52.27, 26.07)
CIE-LCH	lch(44.04, 58.41, 26.51°)
OKLab	oklab(53.78% 0.1541 0.0617)
OKLCH	oklch(53.78% 0.166 21.8)
XYZ	xyz(22.8844, 13.8645, 6.3206)
Luminance	0.1386 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3940 #39BBB4

analogous

#BB3981 #BB3940 #BB7339

triadic

#BB3940 #40BB39 #3940BB

tetradic

#BB3940 #81BB39 #39BBB4 #7339BB

square

#BB3940 #81BB39 #39BBB4 #7339BB

split-complementary

#BB3940 #39BB73 #3981BB

monochromatic

#5D1C20 #8C2B30 #BB3940 #CF6268 #DD9195

Accessibility & contrast

On white

5.57

#BB3940 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#BB3940 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3940

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3940	#FFFFFF	#000000	##FFFFFF
##BB3940	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D563F

Deuteranopia (green-blind)

#7D723C

Tritanopia (blue-blind)

#CD133D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #bb3940;
/* rgb */ color: rgb(187, 57, 64);
/* oklch */ color: oklch(53.8% 0.166 21.8);

Tailwind

colors: {
  custom: {
    50: '#d77874',
    500: '#bb3940',
    950: '#000000',
  },
}

SCSS

$custom: #bb3940;
$custom-light: #d77874;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3940",
  "rgb": {
    "r": 187,
    "g": 57,
    "b": 64
  },
  "hsl": {
    "h": 356.769,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53779,
    "c": 0.16599,
    "h": 21.8
  },
  "luminance": 0.13861
}

Semantic roles & 50–950 ramp

primary

#BB3940

secondary

#87C8C5

accent

#DDD54B

background

#FEF7F7

surface

#FCEEED

border

#D5C9C8

text

#160908

muted

#847B7B

Preview Lab

Preview with #BB3940

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

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