Dark slate blue

#1a3f9d

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 strong blue at 223 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 #1a3f9d, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#1a3f9d
RGB26, 63, 157
HSL223, 72%, 36%
HSV223, 83%, 62%
CMYK83%, 60%, 0%, 38%
Lab29.93, 23.74, -54.68
XYZ8.29, 6.21, 32.66
Decimal1720221
Web safe#333399
Pantone287 C
Pantone287 CHex#1a3f9dRgb26 63 157Cmyk83 60 0 38Lab30 24 -55Darker#091535Deep#102660Lighter#2d5cd1

Shades of dark slate blue

Tints of dark slate blue

Colors that go with dark slate blue

Dark slate blue in print

It converts to cmyk cleanly and holds its character from screen to paper. The cmyk build is 83, 60, 0, 38.

The same color needs a different cmyk build depending on the paper. Here is #1a3f9d on both.

Coated stockgloss or silk, C
83 60 0 38
Ink sits on the surface, so colors stay bright and close to screen.
Uncoated stocknatural or matte, U
80 59 4 44
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 #1a3f9d straight into your stylesheet.

.background { background-color: #1a3f9d; }
.text { color: #1a3f9d; }
.border { border: 2px solid #1a3f9d; }

How dark slate blue looks on light and dark

Dark slate blue and accessibility

Contrast ratios for #1a3f9d against black and white text, measured to the WCAG standard.

Textwhite text on this color
9.37:1
AA pass · AA large pass · AAA pass
Textblack text on this color
2.24:1
AA fail · AA large fail · AAA fail

Use white text on this color for readable body copy. To test #1a3f9d 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 #1a3f9d sits on real print products. Start any of these in the maker.

Your nameFounderhello@brand.comBusiness 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 #1a3f9d and its shades, free at print quality. Click any one to keep editing in the pattern maker.

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 #1a3f9d is computed, not guessed. Rgb, hsl, hsv, lab and xyz are derived through the usual sRGB conversion formulas. 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 figure is the nearest match in our reference set by perceptual distance and it is an approximation, not an exact spot color.