Dark slate blue

#40407b

Hex, rgb, cmyk and Pantone values for dark slate blue, with shades, tints, matching colors and free print quality patterns.

Dark slate blue sits in the blue band, deep and soft. 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 #40407b, ready to copy. Hex, rgb, hsl, hsv, cmyk, cie-lab, xyz, decimal, web safe and the nearest Pantone.

Hex#40407b

RGB64, 64, 123

HSL240, 32%, 37%

HSV240, 48%, 48%

CMYK48%, 48%, 0%, 52%

Lab29.88, 16.92, -33.7

XYZ7.52, 6.19, 19.54

Decimal4210811

Web safe#333366

Pantone534 C

Shades of dark slate blue

#3b3b71 #353566 #30305c #2b2b52 #252548 #20203d #1b1b33 #151529 #10101e #0a0a14

Tints of dark slate blue

#4a4a8f #5555a3 #6767b0 #7b7bba #8f8fc5 #a3a3cf #b7b7da #cbcbe4 #dfdfee #f3f3f9

Colors that go with dark slate blue

Complementary#7b7b40 Analogous#405d7b Analogous#5d407b Triadic#7b4040 Triadic#407b40 Split complementary#7b5e40 Split complementary#5e7b40

Dark slate blue in print

It converts to cmyk cleanly and holds its character from screen to paper. The cmyk build is 48, 48, 0, 52.

The same color needs a different cmyk build depending on the paper. Here is #40407b on both.

Coated stockgloss or silk, C

48 48 0 52

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

Uncoated stocknatural or matte, U

48 48 4 58

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 readrgb vs cmyk for print andwhat the k in cmyk means.

Dark slate blue in css

Copy #40407b straight into your stylesheet.

.background { background-color: #40407b; }
.text { color: #40407b; }
.border { border: 2px solid #40407b; }

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 #40407b against black and white text, measured to the WCAG standard.

Use white text on this color for readable body copy. To test #40407b against any other color, not just black and white, run the pair through ourcontrast checker for a live WCAG reading.

Dark slate blue on a business card, sticker and pattern

A quick look at how #40407b 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 thecolor palette generator, or check a design for print with thergb to cmyk converter.

Turn dark slate blue into a seamless pattern

Four patterns built from #40407b 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 #40407b are worked out. 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 figure is the nearest match in our reference set by perceptual distance and it is an approximation, not an exact spot color.