Dark slate blue

#643c88

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

Dark slate blue is a deep purple with a serious cast. 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 #643c88, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#643c88

RGB100, 60, 136

HSL272, 39%, 38%

HSV272, 56%, 53%

CMYK26%, 56%, 0%, 47%

Lab33.39, 33.08, -35.97

XYZ11.32, 7.72, 24.19

Decimal6569096

Web safe#663399

Pantone526 C

Shades of dark slate blue

#5c377d #533271 #4b2d66 #42285a #3a234f #311e43 #291938 #20132c #180e21 #100915

Tints of dark slate blue

#73459d #824eb1 #9163ba #9f77c3 #ae8ccc #bca0d5 #cbb5de #d9cae7 #e8def0 #f6f3fa

Colors that go with dark slate blue

Complementary#60883c Analogous#3e3c88 Analogous#883c86 Triadic#88643c Triadic#3c8864 Split complementary#86883c Split complementary#3c883e

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 26, 56, 0, 47.

The same color needs a different cmyk build depending on the paper. Here is #643c88 on both.

Coated stockgloss or silk, C

26 56 0 47

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

Uncoated stocknatural or matte, U

28 56 4 53

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 #643c88 straight into your stylesheet.

.background { background-color: #643c88; }
.text { color: #643c88; }
.border { border: 2px solid #643c88; }

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 #643c88 against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #643c88 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 #643c88 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 #643c88 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

The figures for #643c88 come from standard color math, shown so you can check them. Rgb, hsl, hsv, lab and xyz are derived through the usual sRGB conversion formulas. 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.