#B31B57#B31B57

#B31B57 is a mid, vivid pink. Relative luminance 0.111; OKLCH L 50.4% C 0.187 H 4.5°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#B31B57
RGB	rgb(179, 27, 87)
HSL	hsl(336, 74%, 40%)
HSV	hsv(336, 85%, 70%)
CMYK	cmyk(0%, 84.9%, 51.4%, 29.8%)
CIE-LAB	lab(39.68, 60.85, 5.59)
CIE-LCH	lch(39.68, 61.11, 5.24°)
OKLab	oklab(50.44% 0.1865 0.0148)
OKLCH	oklch(50.44% 0.187 4.5)
XYZ	xyz(20.7046, 11.0587, 10.0593)
Luminance	0.1106 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31B57 #1BB377

analogous

#B31BA3 #B31B57 #B32B1B

triadic

#B31B57 #57B31B #1B57B3

tetradic

#B31B57 #A3B31B #1BB377 #2B1BB3

square

#B31B57 #A3B31B #1BB377 #2B1BB3

split-complementary

#B31B57 #1BB32B #1BA3B3

monochromatic

#490B23 #7E133D #B31B57 #DF2C73 #E76196

Accessibility & contrast

On white

6.54

#B31B57 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#B31B57 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31B57

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31B57	#FFFFFF	#000000	##FFFFFF
##B31B57	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464B58

Deuteranopia (green-blind)

#6D6853

Tritanopia (blue-blind)

#C30037

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b31b57;
/* rgb */ color: rgb(179, 27, 87);
/* oklch */ color: oklch(50.4% 0.187 4.5);

Tailwind

colors: {
  custom: {
    50: '#d06b86',
    500: '#b31b57',
    950: '#000000',
  },
}

SCSS

$custom: #b31b57;
$custom-light: #d06b86;
$custom-dark: #000000;

JSON

{
  "hex": "#b31b57",
  "rgb": {
    "r": 179,
    "g": 27,
    "b": 87
  },
  "hsl": {
    "h": 336.316,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.5044,
    "c": 0.18703,
    "h": 4.5
  },
  "luminance": 0.11056
}

Semantic roles & 50–950 ramp

primary

#B31B57

secondary

#5ECCA0

accent

#F0A737

background

#FDF6F8

surface

#FBECEF

border

#D4C7CA

text

#15080B

muted

#837A7C

Preview Lab

Preview with #B31B57

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

Preview Lab → · Contrast checker → · Palette generator →