What Color Do Purple and Blue Make?

The Short Answer

Mixing purple with blue gives a blue-violet. Depending on the proportions and the shades you start with, the result may also be called indigo, deep violet or, when lightened, periwinkle. The more blue you add, the further the color moves from purple toward blue. The red in the purple fades, and the blue takes over.

Purple and blue are neighbors on the color wheel, so mixing them does not create a new hue family. You get an intermediate tone that sits between the two. That makes the pair easy to combine in a logo palette, but it also means the mixed color can look very close to its parents.

Why the Result Depends on the Color Model

"Mixing" means different things in paint, on screens and in print. Logo artwork often has to work in all three, so the distinction matters.

• Paint and pigment (subtractive): Purple pigment absorbs most green light and reflects red and blue. Adding blue pigment absorbs more of the red, so the mix becomes a darker, bluer violet. Pigment mixes also tend to get duller and darker as you combine colors.
• Screen light (additive, RGB): Purple on screen is red and blue light together. Adding more blue light raises the blue channel, which gives a brighter, more electric violet rather than a darker one.
• Print ink (CMYK): Purples are usually built from magenta and cyan. Shifting the balance toward cyan moves the color toward blue-violet. How the printed result looks still depends on the paper, the press and the color profile.

What the Mix Looks Like in Design Software

Vector editors don't blend colors like wet paint. When two shapes overlap, the visible color comes from the blending mode and the opacity. Simple arithmetic on two common RGB values shows how much the method matters. Take a standard purple (128, 0, 128) and pure blue (0, 0, 255):

Purple        RGB 128, 0, 128   #800080
Blue          RGB   0, 0, 255   #0000FF

50% average   RGB  64, 0, 192   #4000C0   (deep blue-violet)
Additive sum  RGB 128, 0, 255   #8000FF   (bright violet; blue channel capped at 255)

The average is roughly what you see when blue sits at 50% opacity over purple in Normal mode. The additive sum is what an Add or Linear Dodge style mode would produce. Other modes, such as Multiply or Screen, give different results again. The colors you start with also change the outcome, so a reddish purple and a bluish purple will produce different mixes.

Using a Purple-Blue Mix in a Vector Logo

If a logo uses the blend of purple and blue, define that blend as its own color. Don't rely on overlapping transparent shapes to create it. A transparency effect can look right in the design file and then change when the artwork is flattened, exported to another format, opened in other software or sent to print. A solid, named color keeps the logo predictable.

• Create a swatch for the mixed color with explicit values for each model you deliver: hex and RGB for screens, CMYK for process print and, if the brand uses one, a matched spot color.
• Use global or linked swatches so updating the color in one place updates every instance in the artwork.
• For a purple-to-blue gradient, check the midpoint. Some gradient settings make the center look muddy or grayish, and adding a defined blue-violet stop in the middle can keep the transition clean.
• Check contrast. Purple, blue-violet and blue have similar lightness at full saturation, so they can blur together at small sizes or in grayscale. Test the logo reduced in size and in one-color versions.
• Confirm the colors in the final delivery files, not only in the working file. RGB-to-CMYK conversion can make vivid violets look duller, because bright screen violets are often outside the range process ink can reproduce.

Sampling Colors from an Existing Logo

If you're trying to match a blue-violet in an existing logo, where you sample the color from matters. A color picked from a JPEG, PNG or screenshot comes from a raster preview, and compression, scaling and color profiles can shift it. A file with an .svg, .eps, .ai or .pdf extension is not automatically true vector artwork either. It may contain an embedded raster image instead of editable paths with assigned fills. Open the file and check that the shapes are vector objects before treating their fill values as the official colors. Where a brand guide exists, its published values are more reliable than sampling.

Permission is a separate question. Being able to download a logo file does not mean you may change its colors or reuse its artwork, fonts or trademarks. Check the usage terms before altering someone else's logo.

What This Article Does Not Cover

No specific logo, brand palette, software version or test file was provided for this topic. The color values above are illustrative arithmetic on standard RGB values, not measurements of a particular design, and there are no recommended spot-color matches here. For an exact match, take values from the original vector source or the brand's documented color specifications, and confirm print results with a physical proof.