#BB313B#BB313B

#BB313B is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.9% C 0.174 H 21.8°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#BB313B
RGB	rgb(187, 49, 59)
HSL	hsl(356, 58%, 46%)
HSV	hsv(356, 74%, 73%)
CMYK	cmyk(0%, 73.8%, 68.4%, 26.7%)
CIE-LAB	lab(42.88, 54.96, 27.67)
CIE-LCH	lch(42.88, 61.53, 26.72°)
OKLab	oklab(52.89% 0.1616 0.0646)
OKLCH	oklch(52.89% 0.174 21.8)
XYZ	xyz(22.3837, 13.0806, 5.4830)
Luminance	0.1308 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB313B #31BBB1

analogous

#BB3180 #BB313B #BB6C31

triadic

#BB313B #3BBB31 #313BBB

tetradic

#BB313B #80BB31 #31BBB1 #6C31BB

square

#BB313B #80BB31 #31BBB1 #6C31BB

split-complementary

#BB313B #31BB6C #3180BB

monochromatic

#5A181C #8B242C #BB313B #D3565F #E0878D

Accessibility & contrast

On white

5.81

#BB313B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#BB313B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB313B

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB313B	#FFFFFF	#000000	##FFFFFF
##BB313B	1.00	5.81	3.62	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59523A

Deuteranopia (green-blind)

#7B7037

Tritanopia (blue-blind)

#CD0036

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb313b;
/* rgb */ color: rgb(187, 49, 59);
/* oklch */ color: oklch(52.9% 0.174 21.8);

Tailwind

colors: {
  custom: {
    50: '#d77471',
    500: '#bb313b',
    950: '#000000',
  },
}

SCSS

$custom: #bb313b;
$custom-light: #d77471;
$custom-dark: #000000;

JSON

{
  "hex": "#bb313b",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 59
  },
  "hsl": {
    "h": 355.652,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52894,
    "c": 0.17404,
    "h": 21.8
  },
  "luminance": 0.13077
}

Semantic roles & 50–950 ramp

primary

#BB313B

secondary

#7FC9C4

accent

#E2D646

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB313B

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

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