Dark slate blue

#1d3fbb

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 blue that reads serious. Deep blues like this anchor serious, established brands. Warm oranges and ambers opposite it add energy and grey keeps it professional.

Dark slate blue color values

Every conversion for #1d3fbb, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#1d3fbb
RGB29, 63, 187
HSL227, 73%, 42%
HSV227, 84%, 73%
CMYK84%, 66%, 0%, 27%
Lab32.71, 35.57, -68.07
XYZ11.25, 7.4, 47.85
Decimal1916859
Web safe#3333cc
Pantone2728 C
Pantone2728 CHex#1d3fbbRgb29 63 187Cmyk84 66 0 27Lab33 36 -68Darker#0a153fDeep#132a7dLighter#4666d9

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 84, 66, 0, 27.

The same color needs a different cmyk build depending on the paper. Here is #1d3fbb on both.

Coated stockgloss or silk, C
84 66 0 27
Ink sits on the surface, so colors stay bright and close to screen.
Uncoated stocknatural or matte, U
81 65 4 33
The stock absorbs ink and gains dot, so it needs a heavier build and reads a touch softer.

This color is saturated enough to sit near the edge of cmyk gamut, so expect a small drop in punch on paper and proof it before a long run.

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 #1d3fbb straight into your stylesheet.

.background { background-color: #1d3fbb; }
.text { color: #1d3fbb; }
.border { border: 2px solid #1d3fbb; }

How dark slate blue looks on light and dark

Dark slate blue and accessibility

Contrast ratios for #1d3fbb against black and white text, measured to the WCAG standard.

Textwhite text on this color
8.46:1
AA pass · AA large pass · AAA pass
Textblack text on this color
2.48:1
AA fail · AA large fail · AAA fail

Use white text on this color for readable body copy. To test #1d3fbb 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 #1d3fbb 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 #1d3fbb 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

The figures for #1d3fbb come from standard color math, shown so you can check them. The rgb, hsl, hsv, cie-lab and xyz values follow the standard conversions from the sRGB color space. 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. The Pantone value is the closest reference by perceptual color distance and should be treated as a starting point, not a guaranteed match.