#631B3F#631B3F

#631B3F is a dark, moderate pink. Relative luminance 0.038; OKLCH L 35.1% C 0.110 H 353.5°. Best body text is #FFFFFF at 11.94:1 contrast (WCAG AA passes).

Color values

HEX	#631B3F
RGB	rgb(99, 27, 63)
HSL	hsl(330, 57%, 25%)
HSV	hsv(330, 73%, 39%)
CMYK	cmyk(0%, 72.7%, 36.4%, 61.2%)
CIE-LAB	lab(22.99, 35.75, -4.86)
CIE-LCH	lch(22.99, 36.07, 352.26°)
OKLab	oklab(35.06% 0.1093 -0.0124)
OKLCH	oklch(35.06% 0.11 353.5)
XYZ	xyz(6.4351, 3.7961, 5.0955)
Luminance	0.0379 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B3F #1B633F

analogous

#631B63 #631B3F #631B1B

triadic

#631B3F #3F631B #1B3F63

tetradic

#631B3F #63631B #1B633F #1B1B63

square

#631B3F #63631B #1B633F #1B1B63

split-complementary

#631B3F #1B631B #1B6363

monochromatic

#18070F #330E20 #631B3F #93285E #C3357C

Accessibility & contrast

On white

11.94

#631B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#631B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B3F

11.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B3F	#FFFFFF	#000000	##FFFFFF
##631B3F	1.00	11.94	1.76	11.94
#FFFFFF	11.94	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#272E40

Deuteranopia (green-blind)

#3B3C3D

Tritanopia (blue-blind)

#6B152A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #631b3f;
/* rgb */ color: rgb(99, 27, 63);
/* oklch */ color: oklch(35.1% 0.110 353.5);

Tailwind

colors: {
  custom: {
    50: '#935d74',
    500: '#631b3f',
    950: '#000000',
  },
}

SCSS

$custom: #631b3f;
$custom-light: #935d74;
$custom-dark: #000000;

JSON

{
  "hex": "#631b3f",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 63
  },
  "hsl": {
    "h": 330,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35056,
    "c": 0.11,
    "h": 353.5
  },
  "luminance": 0.03795
}

Semantic roles & 50–950 ramp

primary

#631B3F

secondary

#41986D

accent

#E09447

background

#F9F5F7

surface

#F2E9ED

border

#CCC5C8

text

#0D0508

muted

#7E797B

Preview Lab

Preview with #631B3F

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

Preview Lab → · Contrast checker → · Palette generator →