#663A7C#663A7C

#663A7C is a dark, moderate purple. Relative luminance 0.073; OKLCH L 43.1% C 0.115 H 313.3°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#663A7C
RGB	rgb(102, 58, 124)
HSL	hsl(280, 36%, 36%)
HSV	hsv(280, 53%, 49%)
CMYK	cmyk(17.7%, 53.2%, 0%, 51.4%)
CIE-LAB	lab(32.49, 31.87, -29.92)
CIE-LCH	lch(32.49, 43.71, 316.81°)
OKLab	oklab(43.13% 0.0787 -0.0834)
OKLCH	oklch(43.13% 0.115 313.3)
XYZ	xyz(10.6300, 7.3064, 19.9152)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A7C #507C3A

analogous

#453A7C #663A7C #7C3A71

triadic

#663A7C #7C663A #3A7C66

tetradic

#663A7C #7C453A #507C3A #3A717C

square

#663A7C #7C453A #507C3A #3A717C

split-complementary

#663A7C #717C3A #3A7C45

monochromatic

#211329 #442652 #663A7C #884EA6 #A573BD

Accessibility & contrast

On white

8.53

#663A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#663A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A7C

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A7C	#FFFFFF	#000000	##FFFFFF
##663A7C	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4A7E

Deuteranopia (green-blind)

#384E7A

Tritanopia (blue-blind)

#644555

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #663a7c;
/* rgb */ color: rgb(102, 58, 124);
/* oklch */ color: oklch(43.1% 0.115 313.3);

Tailwind

colors: {
  custom: {
    50: '#9372a2',
    500: '#663a7c',
    950: '#000000',
  },
}

SCSS

$custom: #663a7c;
$custom-light: #9372a2;
$custom-dark: #000000;

JSON

{
  "hex": "#663a7c",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 124
  },
  "hsl": {
    "h": 280,
    "s": 36.264,
    "l": 35.686
  },
  "oklch": {
    "l": 0.43134,
    "c": 0.11469,
    "h": 313.3
  },
  "luminance": 0.07306
}

Semantic roles & 50–950 ramp

primary

#663A7C

secondary

#7FA76B

accent

#CC5C81

background

#F9F6FA

surface

#F1ECF3

border

#CBC7CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663A7C

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

Preview Lab → · Contrast checker → · Palette generator →