#663B7B#663B7B

#663B7B is a dark, moderate purple. Relative luminance 0.074; OKLCH L 43.2% C 0.112 H 313.6°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#663B7B
RGB	rgb(102, 59, 123)
HSL	hsl(280, 35%, 36%)
HSV	hsv(280, 52%, 48%)
CMYK	cmyk(17.1%, 52%, 0%, 51.8%)
CIE-LAB	lab(32.66, 31.05, -29.03)
CIE-LCH	lch(32.66, 42.51, 316.93°)
OKLab	oklab(43.24% 0.077 -0.0809)
OKLCH	oklch(43.24% 0.112 313.6)
XYZ	xyz(10.6180, 7.3830, 19.6008)
Luminance	0.0738 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B7B #507B3B

analogous

#463B7B #663B7B #7B3B70

triadic

#663B7B #7B663B #3B7B66

tetradic

#663B7B #7B463B #507B3B #3B707B

square

#663B7B #7B463B #507B3B #3B707B

split-complementary

#663B7B #707B3B #3B7B46

monochromatic

#211328 #442752 #663B7B #884FA4 #A574BC

Accessibility & contrast

On white

8.48

#663B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#663B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B7B

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B7B	#FFFFFF	#000000	##FFFFFF
##663B7B	1.00	8.48	2.48	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4A7D

Deuteranopia (green-blind)

#394E79

Tritanopia (blue-blind)

#644555

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #663b7b;
/* rgb */ color: rgb(102, 59, 123);
/* oklch */ color: oklch(43.2% 0.112 313.6);

Tailwind

colors: {
  custom: {
    50: '#9372a1',
    500: '#663b7b',
    950: '#000000',
  },
}

SCSS

$custom: #663b7b;
$custom-light: #9372a1;
$custom-dark: #000000;

JSON

{
  "hex": "#663b7b",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 123
  },
  "hsl": {
    "h": 280.313,
    "s": 35.165,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43241,
    "c": 0.11169,
    "h": 313.6
  },
  "luminance": 0.07383
}

Semantic roles & 50–950 ramp

primary

#663B7B

secondary

#7FA66C

accent

#CB5D81

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #663B7B

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

Preview Lab → · Contrast checker → · Palette generator →