#663B57#663B57

#663B57 is a dark, moderate pink. Relative luminance 0.066; OKLCH L 41.4% C 0.072 H 341.3°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#663B57
RGB	rgb(102, 59, 87)
HSL	hsl(321, 27%, 32%)
HSV	hsv(321, 42%, 40%)
CMYK	cmyk(0%, 42.2%, 14.7%, 60%)
CIE-LAB	lab(30.98, 23.40, -8.74)
CIE-LCH	lch(30.98, 24.98, 339.51°)
OKLab	oklab(41.43% 0.0686 -0.0232)
OKLCH	oklch(41.43% 0.072 341.3)
XYZ	xyz(8.7638, 6.6414, 9.8353)
Luminance	0.0664 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B57 #3B664A

analogous

#603B66 #663B57 #663B42

triadic

#663B57 #57663B #3B5766

tetradic

#663B57 #66603B #3B664A #3B4266

square

#663B57 #66603B #3B664A #3B4266

split-complementary

#663B57 #42663B #3B6660

monochromatic

#180E15 #3F2536 #663B57 #8D5178 #AC6F97

Accessibility & contrast

On white

9.02

#663B57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#663B57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B57

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B57	#FFFFFF	#000000	##FFFFFF
##663B57	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D4558

Deuteranopia (green-blind)

#484B56

Tritanopia (blue-blind)

#6B3B45

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #663b57;
/* rgb */ color: rgb(102, 59, 87);
/* oklch */ color: oklch(41.4% 0.072 341.3);

Tailwind

colors: {
  custom: {
    50: '#937286',
    500: '#663b57',
    950: '#000000',
  },
}

SCSS

$custom: #663b57;
$custom-light: #937286;
$custom-dark: #000000;

JSON

{
  "hex": "#663b57",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 87
  },
  "hsl": {
    "h": 320.93,
    "s": 26.708,
    "l": 31.569
  },
  "oklch": {
    "l": 0.41425,
    "c": 0.07246,
    "h": 341.3
  },
  "luminance": 0.06641
}

Semantic roles & 50–950 ramp

primary

#663B57

secondary

#679677

accent

#C38665

background

#F9F6F8

surface

#F1ECEF

border

#CBC7CA

text

#0D080B

muted

#7E7B7C

Preview Lab

Preview with #663B57

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

Preview Lab → · Contrast checker → · Palette generator →