Dark slate blue

#4040b3

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 240 degrees. A mid blue this balanced is a workhorse for corporate identity. Warm oranges and ambers opposite it add energy and grey keeps it professional.

Dark slate blue color values

Every conversion for #4040b3, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#4040b3

RGB64, 64, 179

HSL240, 47%, 48%

HSV240, 64%, 70%

CMYK64%, 64%, 0%, 30%

Lab34.01, 35.87, -61.15

XYZ12.08, 8.01, 43.56

Decimal4210867

Web safe#3333cc

Pantone2728 C

Shades of dark slate blue

#3a3aa3 #353594 #2f2f84 #2a2a74 #242465 #1e1e55 #191945 #131336 #0e0e26 #080817

Tints of dark slate blue

#4d4dbf #5f5fc6 #7171cc #8484d3 #9696d9 #a8a8e0 #bbbbe7 #cdcded #dfdff4 #f2f2fa

Colors that go with dark slate blue

Complementary#b3b340 Analogous#4079b3 Analogous#7940b3 Triadic#b34040 Triadic#40b340 Split complementary#b37a40 Split complementary#7ab340

Dark slate blue in print

It sits in a comfortable part of the gamut and reproduces reliably on press. The cmyk build is 64, 64, 0, 30.

The same color needs a different cmyk build depending on the paper. Here is #4040b3 on both.

Coated stockgloss or silk, C

64 64 0 30

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

Uncoated stocknatural or matte, U

63 63 4 36

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 #4040b3 straight into your stylesheet.

.background { background-color: #4040b3; }
.text { color: #4040b3; }
.border { border: 2px solid #4040b3; }

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 #4040b3 against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #4040b3 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 #4040b3 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 #4040b3 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 #4040b3 come from standard color math, shown so you can check them. 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.