#663E7C#663E7C

#663E7C is a dark, moderate violet. Relative luminance 0.077; OKLCH L 43.8% C 0.108 H 312.5°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#663E7C
RGB	rgb(102, 62, 124)
HSL	hsl(279, 33%, 36%)
HSV	hsv(279, 50%, 49%)
CMYK	cmyk(17.7%, 50%, 0%, 51.4%)
CIE-LAB	lab(33.40, 29.52, -28.48)
CIE-LCH	lch(33.40, 41.02, 316.03°)
OKLab	oklab(43.81% 0.0726 -0.0793)
OKLCH	oklch(43.81% 0.108 312.5)
XYZ	xyz(10.8396, 7.7255, 19.9850)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663E7C #547C3E

analogous

#473E7C #663E7C #7C3E73

triadic

#663E7C #7C663E #3E7C66

tetradic

#663E7C #7C473E #547C3E #3E737C

square

#663E7C #7C473E #547C3E #3E737C

split-complementary

#663E7C #737C3E #3E7C47

monochromatic

#23152A #442A53 #663E7C #8852A5 #A479BC

Accessibility & contrast

On white

8.25

#663E7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#663E7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663E7C

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663E7C	#FFFFFF	#000000	##FFFFFF
##663E7C	1.00	8.25	2.55	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304C7E

Deuteranopia (green-blind)

#3B4F7A

Tritanopia (blue-blind)

#644857

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #663e7c;
/* rgb */ color: rgb(102, 62, 124);
/* oklch */ color: oklch(43.8% 0.108 312.5);

Tailwind

colors: {
  custom: {
    50: '#9374a2',
    500: '#663e7c',
    950: '#000000',
  },
}

SCSS

$custom: #663e7c;
$custom-light: #9374a2;
$custom-dark: #000000;

JSON

{
  "hex": "#663e7c",
  "rgb": {
    "r": 102,
    "g": 62,
    "b": 124
  },
  "hsl": {
    "h": 278.71,
    "s": 33.333,
    "l": 36.471
  },
  "oklch": {
    "l": 0.43809,
    "c": 0.10751,
    "h": 312.5
  },
  "luminance": 0.07725
}

Semantic roles & 50–950 ramp

primary

#663E7C

secondary

#83A670

accent

#C95E84

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663E7C

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

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