Dark slate blue

#633f8b

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 weighty cast. Deep purples like this carry luxury and craft. Yellow greens across the wheel wake it up and soft greys let it stay refined.

Dark slate blue color values

Every conversion for #633f8b, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#633f8b

RGB99, 63, 139

HSL268, 38%, 40%

HSV268, 55%, 55%

CMYK29%, 55%, 0%, 45%

Lab34.13, 31.81, -36.64

XYZ11.58, 8.07, 25.37

Decimal6504331

Web safe#663399

Pantone668 C

Shades of dark slate blue

#5b3a7f #523473 #4a2f68 #412a5c #392450 #311f44 #281a38 #20142d #170f21 #0f0a15

Tints of dark slate blue

#71489f #8053b1 #8e67ba #9d7bc3 #ac8fcc #bba3d5 #cab7de #d8cbe7 #e7dff0 #f6f3f9

Colors that go with dark slate blue

Complementary#678b3f Analogous#3f418b Analogous#893f8b Triadic#8b633f Triadic#3f8b63 Split complementary#8b893f Split complementary#418b3f

Dark slate blue in print

It converts to cmyk cleanly and holds its character from screen to paper. The cmyk build is 29, 55, 0, 45.

The same color needs a different cmyk build depending on the paper. Here is #633f8b on both.

Coated stockgloss or silk, C

29 55 0 45

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

Uncoated stocknatural or matte, U

31 55 4 51

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 read rgb vs cmyk for print and what the k in cmyk means.

Dark slate blue in css

Copy #633f8b straight into your stylesheet.

.background { background-color: #633f8b; }
.text { color: #633f8b; }
.border { border: 2px solid #633f8b; }

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 #633f8b against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #633f8b against any other color, not just black and white, run the pair through our contrast checker for a live WCAG reading.

Dark slate blue on a business card, sticker and pattern

A quick look at how #633f8b 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 the color palette generator, or check a design for print with the rgb to cmyk converter.

Turn dark slate blue into a seamless pattern

Four patterns built from #633f8b 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

Here is how the numbers for #633f8b are worked out. We convert from sRGB to each space with the standard formulas, so the codes match what design tools show. The uncoated cmyk build carries more ink than the coated one, which is what a printer would compensate for when the same color runs on a rougher stock. The Pantone value is the closest reference by perceptual color distance and should be treated as a starting point, not a guaranteed match.