#66309B#66309B

#66309B is a dark, vivid violet. Relative luminance 0.073; OKLCH L 43.8% C 0.167 H 303.3°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#66309B
RGB	rgb(102, 48, 155)
HSL	hsl(270, 53%, 40%)
HSV	hsv(270, 69%, 61%)
CMYK	cmyk(34.2%, 69%, 0%, 39.2%)
CIE-LAB	lab(32.49, 44.92, -49.03)
CIE-LCH	lch(32.49, 66.50, 312.50°)
OKLab	oklab(43.78% 0.0914 -0.1394)
OKLCH	oklch(43.78% 0.167 303.3)
XYZ	xyz(12.4515, 7.3053, 31.7581)
Luminance	0.0731 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66309B #659B30

analogous

#30309B #66309B #9B309B

triadic

#66309B #9B6630 #309B66

tetradic

#66309B #9B3030 #659B30 #309B9B

square

#66309B #9B3030 #659B30 #309B9B

split-complementary

#66309B #9B9B30 #309B30

monochromatic

#28133E #47226C #66309B #8543C5 #A372D3

Accessibility & contrast

On white

8.53

#66309B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#66309B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66309B

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66309B	#FFFFFF	#000000	##FFFFFF
##66309B	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)

#004B9E

Deuteranopia (green-blind)

#004C99

Tritanopia (blue-blind)

#5C4861

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #66309b;
/* rgb */ color: rgb(102, 48, 155);
/* oklch */ color: oklch(43.8% 0.167 303.3);

Tailwind

colors: {
  custom: {
    50: '#966cb9',
    500: '#66309b',
    950: '#000000',
  },
}

SCSS

$custom: #66309b;
$custom-light: #966cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#66309b",
  "rgb": {
    "r": 102,
    "g": 48,
    "b": 155
  },
  "hsl": {
    "h": 270.28,
    "s": 52.709,
    "l": 39.804
  },
  "oklch": {
    "l": 0.43779,
    "c": 0.16667,
    "h": 303.3
  },
  "luminance": 0.07305
}

Semantic roles & 50–950 ramp

primary

#66309B

secondary

#93BB6C

accent

#DC4C93

background

#F9F6FB

surface

#F2ECF6

border

#CCC7D0

text

#0E0712

muted

#7E7A81

Preview Lab

Preview with #66309B

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

Preview Lab → · Contrast checker → · Palette generator →