#B31B45#B31B45

#B31B45 is a mid, vivid pink. Relative luminance 0.108; OKLCH L 50.0% C 0.184 H 12.7°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#B31B45
RGB	rgb(179, 27, 69)
HSL	hsl(343, 74%, 40%)
HSV	hsv(343, 85%, 70%)
CMYK	cmyk(0%, 84.9%, 61.5%, 29.8%)
CIE-LAB	lab(39.24, 59.57, 16.45)
CIE-LCH	lch(39.24, 61.80, 15.44°)
OKLab	oklab(49.98% 0.1796 0.0404)
OKLCH	oklch(49.98% 0.184 12.7)
XYZ	xyz(20.0587, 10.8003, 6.6576)
Luminance	0.1080 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31B45 #1BB389

analogous

#B31B91 #B31B45 #B33D1B

triadic

#B31B45 #45B31B #1B45B3

tetradic

#B31B45 #91B31B #1BB389 #3D1BB3

square

#B31B45 #91B31B #1BB389 #3D1BB3

split-complementary

#B31B45 #1BB33D #1B91B3

monochromatic

#490B1C #7E1331 #B31B45 #DF2C5E #E76186

Accessibility & contrast

On white

6.65

#B31B45 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#B31B45 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31B45

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31B45	#FFFFFF	#000000	##FFFFFF
##B31B45	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4945

Deuteranopia (green-blind)

#706741

Tritanopia (blue-blind)

#C4002E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31b45;
/* rgb */ color: rgb(179, 27, 69);
/* oklch */ color: oklch(50.0% 0.184 12.7);

Tailwind

colors: {
  custom: {
    50: '#d16b78',
    500: '#b31b45',
    950: '#000000',
  },
}

SCSS

$custom: #b31b45;
$custom-light: #d16b78;
$custom-dark: #000000;

JSON

{
  "hex": "#b31b45",
  "rgb": {
    "r": 179,
    "g": 27,
    "b": 69
  },
  "hsl": {
    "h": 343.421,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.49977,
    "c": 0.18407,
    "h": 12.7
  },
  "luminance": 0.10797
}

Semantic roles & 50–950 ramp

primary

#B31B45

secondary

#5ECCAD

accent

#F0BD37

background

#FDF6F7

surface

#FBECED

border

#D4C7C8

text

#150808

muted

#837A7B

Preview Lab

Preview with #B31B45

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

Preview Lab → · Contrast checker → · Palette generator →