Dark slate blue

#28307f

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 blue at 234 degrees. Deep blues like this anchor serious, established brands. It pairs with warm neutrals for balance, or with a brighter accent for contrast.

Dark slate blue color values

Every conversion for #28307f, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#28307f

RGB40, 48, 127

HSL234, 52%, 33%

HSV234, 69%, 50%

CMYK69%, 62%, 0%, 50%

Lab23.99, 24.05, -45.8

XYZ5.76, 4.1, 20.57

Decimal2633855

Web safe#333366

Pantone661 C

Shades of dark slate blue

#252c75 #21286a #1e2460 #1b2056 #181c4b #141841 #111536 #0e112c #0b0d22 #070917

Tints of dark slate blue

#303998 #3843b0 #4450c4 #5d67cc #767ed4 #8f96dc #a7ade3 #c0c4eb #d9dbf3 #f1f2fb

Colors that go with dark slate blue

Complementary#7f7728 Analogous#285b7f Analogous#4c287f Triadic#7f2830 Triadic#307f28 Split complementary#7f4b28 Split complementary#5b7f28

Dark slate blue in print

It sits in a comfortable part of the gamut and reproduces reliably on press. The cmyk build is 69, 62, 0, 50.

The same color needs a different cmyk build depending on the paper. Here is #28307f on both.

Coated stockgloss or silk, C

69 62 0 50

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

Uncoated stocknatural or matte, U

67 61 4 56

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 #28307f straight into your stylesheet.

.background { background-color: #28307f; }
.text { color: #28307f; }
.border { border: 2px solid #28307f; }

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 #28307f against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #28307f 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 #28307f 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 #28307f 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 #28307f is computed, not guessed. We convert from sRGB to each space with the standard formulas, so the codes match what design tools show. The coated and uncoated cmyk builds differ because uncoated stock absorbs more ink and gains dot, so the same color needs a heavier, slightly duller build on press. The Pantone value is the closest reference by perceptual color distance and should be treated as a starting point, not a guaranteed match.