#631B40#631B40

#631B40 is a dark, moderate pink. Relative luminance 0.038; OKLCH L 35.1% C 0.111 H 352.7°. Best body text is #FFFFFF at 11.92:1 contrast (WCAG AA passes).

Color values

HEX	#631B40
RGB	rgb(99, 27, 64)
HSL	hsl(329, 57%, 25%)
HSV	hsv(329, 73%, 39%)
CMYK	cmyk(0%, 72.7%, 35.4%, 61.2%)
CIE-LAB	lab(23.02, 35.88, -5.48)
CIE-LCH	lch(23.02, 36.29, 351.31°)
OKLab	oklab(35.1% 0.1096 -0.0141)
OKLCH	oklch(35.1% 0.111 352.7)
XYZ	xyz(6.4633, 3.8074, 5.2440)
Luminance	0.0381 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B40 #1B633E

analogous

#621B63 #631B40 #631B1C

triadic

#631B40 #40631B #1B4063

tetradic

#631B40 #63621B #1B633E #1B1C63

square

#631B40 #63621B #1B633E #1B1C63

split-complementary

#631B40 #1C631B #1B6362

monochromatic

#180710 #330E21 #631B40 #93285F #C3357E

Accessibility & contrast

On white

11.92

#631B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#631B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B40

11.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B40	#FFFFFF	#000000	##FFFFFF
##631B40	1.00	11.92	1.76	11.92
#FFFFFF	11.92	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272F41

Deuteranopia (green-blind)

#3B3C3E

Tritanopia (blue-blind)

#6B162B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #631b40;
/* rgb */ color: rgb(99, 27, 64);
/* oklch */ color: oklch(35.1% 0.111 352.7);

Tailwind

colors: {
  custom: {
    50: '#935d74',
    500: '#631b40',
    950: '#000000',
  },
}

SCSS

$custom: #631b40;
$custom-light: #935d74;
$custom-dark: #000000;

JSON

{
  "hex": "#631b40",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 64
  },
  "hsl": {
    "h": 329.167,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35097,
    "c": 0.11053,
    "h": 352.7
  },
  "luminance": 0.03807
}

Semantic roles & 50–950 ramp

primary

#631B40

secondary

#41986C

accent

#E09247

background

#F9F5F7

surface

#F2E9ED

border

#CCC5C8

text

#0D0508

muted

#7E797B

Preview Lab

Preview with #631B40

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

Preview Lab → · Contrast checker → · Palette generator →