Dark Slate Blue (#483D8B)

The hex code for Dark Slate Blue is #483D8B. It is rgb(72, 61, 139) in RGB, hsl(248, 39%, 39%) in HSL, and about cmyk(48%, 56%, 0%, 45%) in CMYK — a dark blue. White text is the more readable choice on this background.

#483D8B

HEX#483D8B

RGBrgb(72, 61, 139)

HSLhsl(248, 39%, 39%)

HSVhsv(248, 56%, 55%)

CMYKcmyk(48%, 56%, 0%, 45%)

OKLCHoklch(41.4% 0.125 286)

LABlab(30.28% 21.41 -42.74)

LCHlch(30.28% 47.81 296.61)

Colors Closest to Dark Slate Blue

Dark Slate Blue is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

St. Patrick's Blue#23297AΔE 11.03 Ultra Violet#5F4B8BΔE 11.49 Cosmic Cobalt#2E2D88ΔE 11.64 Spanish Violet#4C2882ΔE 12.52 Cyber Grape#58427CΔE 13.16 Royal Purple#7851A9ΔE 14.94

Browse the full index of named colors A-Z or every blue in the library.

#483D8B Channel Values

How Dark Slate Blue breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 72 · G 61 · B 139	8-bit channels as sent to the display
HSL	H 248° · S 39% · L 39%	Easiest model for building lighter and darker variants
HSV	H 248° · S 56% · V 55%	Matches the picker in most design tools
CMYK	C 48% · M 56% · Y 0% · K 45%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	9.07:1 vs white · 2.32:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Dark Slate Blue background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text9.07:1AA normal AA large AAA normal

Fails AABlack text2.32:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #483D8B in the contrast checker.

Colors That Go With Dark Slate Blue

Pairings derived from color-wheel relationships. The complementary color sits opposite Dark Slate Blue; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of Dark Slate Blue

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #483D8B.

How Dark Slate Blue Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#483D8B

Protanopia#3F3F8B

Protanomaly#433E8B

Deuteranopia#41418B

Deuteranomaly#443F8B

Tritanopia#374D4D

Tritanomaly#3E476B

Achromatopsia#494949

Test a full palette in the color blindness simulator.

Using #483D8B in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--dark-slate-blue: #483D8B;

CSS backgroundbackground-color: #483D8B;

Tailwind configcolors: { 'dark-slate-blue': '#483D8B' }

SwiftUIColor(red: 0.282, green: 0.239, blue: 0.545)

Android XML<color name="dark_slate_blue">#483D8B</color>

SVG fillfill="#483D8B"

More Blue Colors

Dark Slate Blue sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

4a5565 4747ff 4a5d6b 4682b4 4b4bd8 46525d 4b5d67 45b1e8 4b61d1 456fa5 4b9cd3 45556c 5d94c0 766ec8 8fa6bc adadff cec8ef edf2f7 00009c 0057ad 082567 172436 23108e 333366

#483D8B Frequently Asked Questions

What is the hex code for Dark Slate Blue?

The hex code for Dark Slate Blue is #483D8B. That is rgb(72, 61, 139) in RGB, hsl(248, 39%, 39%) in HSL, and approximately cmyk(48%, 56%, 0%, 45%) in CMYK.

What is the RGB value of #483D8B?

#483D8B is rgb(72, 61, 139) — red 72, green 61, and blue 139 on the 0-255 scale.

What is the CMYK value of #483D8B?

#483D8B converts to approximately cmyk(48%, 56%, 0%, 45%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #483D8B be black or white?

White text is the more readable choice. #483D8B scores 9.07:1 against white and 2.32:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Is DarkSlateBlue a CSS named color?

Yes. DarkSlateBlue is one of the CSS named colors, so you can write color: darkslateblue instead of the hex code.

Open Dark Slate Blue in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.