#6639B3#6639B3

#6639B3 is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.9% C 0.183 H 295.4°. Best body text is #FFFFFF at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#6639B3
RGB	rgb(102, 57, 179)
HSL	hsl(262, 52%, 46%)
HSV	hsv(262, 68%, 70%)
CMYK	cmyk(43%, 68.2%, 0%, 29.8%)
CIE-LAB	lab(35.99, 46.55, -57.75)
CIE-LCH	lch(35.99, 74.17, 308.87°)
OKLab	oklab(46.86% 0.0783 -0.165)
OKLCH	oklch(46.86% 0.183 295.4)
XYZ	xyz(15.0771, 9.0054, 43.5829)
Luminance	0.0901 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.73

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6639B3 #86B339

analogous

#3949B3 #6639B3 #A339B3

triadic

#6639B3 #B36639 #39B366

tetradic

#6639B3 #B33949 #86B339 #39B3A3

square

#6639B3 #B33949 #86B339 #39B3A3

split-complementary

#6639B3 #B3A339 #49B339

monochromatic

#311B56 #4C2A85 #6639B3 #865ECC #A98CDA

Accessibility & contrast

On white

7.50

#6639B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#6639B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #6639B3

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6639B3	#FFFFFF	#000000	##FFFFFF
##6639B3	1.00	7.50	2.80	7.50
#FFFFFF	7.50	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#515771

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #6639b3;
/* rgb */ color: rgb(102, 57, 179);
/* oklch */ color: oklch(46.9% 0.183 295.4);

Tailwind

colors: {
  custom: {
    50: '#9873cb',
    500: '#6639b3',
    950: '#000000',
  },
}

SCSS

$custom: #6639b3;
$custom-light: #9873cb;
$custom-dark: #000000;

JSON

{
  "hex": "#6639b3",
  "rgb": {
    "r": 102,
    "g": 57,
    "b": 179
  },
  "hsl": {
    "h": 262.131,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.46862,
    "c": 0.18266,
    "h": 295.4
  },
  "luminance": 0.09006
}

Semantic roles & 50–950 ramp

primary

#6639B3

secondary

#ADC583

accent

#DB4DA7

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #6639B3

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

Preview Lab → · Contrast checker → · Palette generator →