#663D7C#663D7C

#663D7C is a dark, moderate violet. Relative luminance 0.076; OKLCH L 43.6% C 0.109 H 312.7°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#663D7C
RGB	rgb(102, 61, 124)
HSL	hsl(279, 34%, 36%)
HSV	hsv(279, 51%, 49%)
CMYK	cmyk(17.7%, 50.8%, 0%, 51.4%)
CIE-LAB	lab(33.17, 30.11, -28.84)
CIE-LCH	lch(33.17, 41.70, 316.23°)
OKLab	oklab(43.64% 0.0741 -0.0803)
OKLCH	oklch(43.64% 0.109 312.7)
XYZ	xyz(10.7857, 7.6177, 19.9671)
Luminance	0.0762 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D7C #537C3D

analogous

#473D7C #663D7C #7C3D73

triadic

#663D7C #7C663D #3D7C66

tetradic

#663D7C #7C473D #537C3D #3D737C

square

#663D7C #7C473D #537C3D #3D737C

split-complementary

#663D7C #737C3D #3D7C47

monochromatic

#23152A #442953 #663D7C #8851A5 #A477BC

Accessibility & contrast

On white

8.32

#663D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#663D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D7C

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D7C	#FFFFFF	#000000	##FFFFFF
##663D7C	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4C7E

Deuteranopia (green-blind)

#3A4F7A

Tritanopia (blue-blind)

#644756

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #663d7c;
/* rgb */ color: rgb(102, 61, 124);
/* oklch */ color: oklch(43.6% 0.109 312.7);

Tailwind

colors: {
  custom: {
    50: '#9374a2',
    500: '#663d7c',
    950: '#000000',
  },
}

SCSS

$custom: #663d7c;
$custom-light: #9374a2;
$custom-dark: #000000;

JSON

{
  "hex": "#663d7c",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 124
  },
  "hsl": {
    "h": 279.048,
    "s": 34.054,
    "l": 36.275
  },
  "oklch": {
    "l": 0.43638,
    "c": 0.10932,
    "h": 312.7
  },
  "luminance": 0.07618
}

Semantic roles & 50–950 ramp

primary

#663D7C

secondary

#82A66F

accent

#CA5E84

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663D7C

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

Preview Lab → · Contrast checker → · Palette generator →