Dark slate blue

#643f82

Hex, rgb, cmyk and Pantone values for dark slate blue, with shades, tints, matching colors and free print quality patterns.

This is Dark slate blue, a soft purple at 273 degrees. Deep purples like this carry luxury and craft. Pair it with warm yellows for contrast, or with charcoal for a moody scheme.

Dark slate blue color values

Every conversion for #643f82, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#643f82

RGB100, 63, 130

HSL273, 35%, 38%

HSV273, 52%, 51%

CMYK23%, 52%, 0%, 49%

Lab33.72, 29.8, -31.73

XYZ11.06, 7.88, 22.06

Decimal6569858

Web safe#663399

Pantone668 C

Shades of dark slate blue

#5c3a77 #53346c #4b2f61 #422a56 #3a244b #321f40 #291a35 #21152a #180f20 #100a15

Tints of dark slate blue

#734996 #8353aa #9166b5 #a07abf #ae8ec8 #bda2d2 #cbb7dc #dacbe6 #e8dfef #f6f3f9

Colors that go with dark slate blue

Complementary#5d823f Analogous#423f82 Analogous#823f7f Triadic#82643f Triadic#3f8264 Split complementary#7f823f Split complementary#3f8243

Dark slate blue in print

The cmyk build is well inside gamut, so what you see on screen is close to what prints. The cmyk build is 23, 52, 0, 49.

The same color needs a different cmyk build depending on the paper. Here is #643f82 on both.

Coated stockgloss or silk, C

23 52 0 49

Ink sits on the surface, so colors stay bright and close to screen.

Uncoated stocknatural or matte, U

25 52 4 55

The stock absorbs ink and gains dot, so it needs a heavier build and reads a touch softer.

This color converts to cmyk comfortably and should hold on press.

See how it converts in the rgb to cmyk converter, or readrgb vs cmyk for print andwhat the k in cmyk means.

Dark slate blue in css

Copy #643f82 straight into your stylesheet.

.background { background-color: #643f82; }
.text { color: #643f82; }
.border { border: 2px solid #643f82; }

How dark slate blue looks on light and dark

Sample text on black

Sample text on white

Text on this color

Dark slate blue and accessibility

Contrast ratios for #643f82 against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #643f82 against any other color, not just black and white, run the pair through ourcontrast checker for a live WCAG reading.

Dark slate blue on a business card, sticker and pattern

A quick look at how #643f82 sits on real print products. Start any of these in the maker.

Business card

Sticker

Repeat pattern

Building a full palette around dark slate blue? Pull matching colors from any photo with thecolor palette generator, or check a design for print with thergb to cmyk converter.

Turn dark slate blue into a seamless pattern

Four patterns built from #643f82 and its shades, free at print quality. Click any one to keep editing in the pattern maker.

Arches Signature stripes Gem Shingles

Make posters, wallpaper and packaging art from dark slate blue, free and print ready.

Open in pattern maker

How we calculate these values

Every value on this page for #643f82 is computed, not guessed. We convert from sRGB to each space with the standard formulas, so the codes match what design tools show. Two cmyk builds are shown because coated and uncoated papers behave differently, uncoated soaks up ink and needs more of it to hit the same target. For Pantone we return the nearest reference by perceptual distance, which gets you close but is not a substitute for a physical swatch book.