#663C7B#663C7B

#663C7B is a dark, moderate purple. Relative luminance 0.075; OKLCH L 43.4% C 0.110 H 313.4°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX	#663C7B
RGB	rgb(102, 60, 123)
HSL	hsl(280, 34%, 36%)
HSV	hsv(280, 51%, 48%)
CMYK	cmyk(17.1%, 51.2%, 0%, 51.8%)
CIE-LAB	lab(32.89, 30.47, -28.67)
CIE-LCH	lch(32.89, 41.83, 316.74°)
OKLab	oklab(43.41% 0.0755 -0.0798)
OKLCH	oklch(43.41% 0.11 313.4)
XYZ	xyz(10.6699, 7.4868, 19.6181)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663C7B #517B3C

analogous

#463C7B #663C7B #7B3C70

triadic

#663C7B #7B663C #3C7B66

tetradic

#663C7B #7B463C #517B3C #3C707B

square

#663C7B #7B463C #517B3C #3C707B

split-complementary

#663C7B #707B3C #3C7B46

monochromatic

#221429 #442852 #663C7B #8850A4 #A475BC

Accessibility & contrast

On white

8.41

#663C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#663C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663C7B

8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663C7B	#FFFFFF	#000000	##FFFFFF
##663C7B	1.00	8.41	2.50	8.41
#FFFFFF	8.41	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4B7D

Deuteranopia (green-blind)

#3A4E79

Tritanopia (blue-blind)

#644656

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #663c7b;
/* rgb */ color: rgb(102, 60, 123);
/* oklch */ color: oklch(43.4% 0.110 313.4);

Tailwind

colors: {
  custom: {
    50: '#9373a1',
    500: '#663c7b',
    950: '#000000',
  },
}

SCSS

$custom: #663c7b;
$custom-light: #9373a1;
$custom-dark: #000000;

JSON

{
  "hex": "#663c7b",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 123
  },
  "hsl": {
    "h": 280,
    "s": 34.426,
    "l": 35.882
  },
  "oklch": {
    "l": 0.4341,
    "c": 0.1099,
    "h": 313.4
  },
  "luminance": 0.07487
}

Semantic roles & 50–950 ramp

primary

#663C7B

secondary

#80A66D

accent

#CB5D82

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080F

muted

#7E7B7E

Preview Lab

Preview with #663C7B

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

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