What Colors Make Purple?

The short answer: red and blue make purple, depending on the medium

Mixing blue and red paint or pigment gives purple, also called violet. In this subtractive mixing, each colorant absorbs part of the light. The result depends on the exact red and blue you start with and how much of each you use. More red gives a warmer, plum or berry purple. More blue gives a cooler, violet or indigo purple.

On screens the answer is different. Red and blue light combine additively, and full-strength red plus full-strength blue produce magenta, not a deep purple. Vector logos are usually designed in screen color and then printed in ink, so the difference matters in practice. The same red-and-blue idea gives different results in a design app, an SVG, a web page and a printed brochure.

How red and blue mix in each color model

Medium or model | What red and blue produce | Practical note

Paint and pigment (traditional red-yellow-blue) | Purple or violet | Reds that lean orange and blues that lean green add a trace of yellow, which dulls the mix toward brown or gray

Screen light (RGB, additive) | Magenta at full strength | Purples in RGB use less red than blue, or lower values overall; the CSS named color purple is #800080

Process printing (CMYK, subtractive) | Purples are built mainly from magenta and cyan ink, not red and blue | Cyan plus magenta alone trends toward blue-violet; final proportions depend on the print profile and press

Hue wheel (HSL or HSB) | Hues between blue at 240 degrees and magenta at 300 degrees read as violet to purple | Changing hue moves the color between cool and warm; changing saturation and lightness produces tints and shades

For clean purple in paint, use a red that leans toward magenta and a blue that leans toward violet, such as ultramarine. A cleaner result comes from starting with a magenta-type pigment rather than a fire-engine red. The same logic carries into digital work: a purple that keeps red and blue strong while green stays low looks more saturated than one built from mixed channels.

Why overlapping red and blue shapes do not automatically make purple in vector artwork

In vector design applications, a red shape placed over a blue shape does not blend by default. The top object simply hides the one below. A mixed color appears only if you add opacity or a blend mode, and blend modes calculate color mathematically instead of mimicking paint. In RGB, Multiply applied to pure red and pure blue produces black, because each channel is multiplied by zero in the other color. Screen applied to the same pair produces magenta. Neither result is the purple most people expect from mixing paint.

Transparency and blend effects also behave differently across file types and applications. Some outputs need transparency flattening, and some programs that open an SVG or PDF may display a blend differently from the original design file. For a logo, the most predictable approach is usually to build the overlap as its own shape, for example by dividing the overlapping paths, and fill that shape with a defined purple swatch. The artwork then stays editable as vector paths, renders the same everywhere, and keeps the purple as a named brand color instead of an effect.

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 120 80">
  <!-- solid fills: no blend mode needed -->
  <path d="M0 0H70V80H0Z" fill="#D62828"/>
  <path d="M50 0H120V80H50Z" fill="#1D4ED8"/>
  <!-- overlap drawn as its own shape with an explicit purple -->
  <path d="M50 0H70V80H50Z" fill="#800080"/>
</svg>

The hex values in this sample are only for illustration. A brand's actual purple should come from its own approved specification.

Building a purple logo palette that survives screen and print

• Choose the direction first: red-leaning purples read warmer and more energetic, while blue-leaning purples read cooler and calmer. This is general color perception, not a rule for any particular brand.
• Define each purple as a global or named swatch so that changing it updates every path that uses it.
• Record separate values for each use: RGB or hex for screens, CMYK for process print and, if the brand uses one, a spot color reference for consistent ink matching.
• Expect vivid screen violets to look duller in CMYK, because saturated purples often fall outside the process-ink gamut. Soft-proof with the intended print profile and approve a physical proof where color is critical.
• Build tints and shades by adjusting lightness or saturation of the same hue, so the palette stays related.
• Check the contrast of purple text and fine details against their actual backgrounds, especially in small and single-color versions of the logo.

What to check in a delivered logo file

A file extension such as SVG, AI, EPS or PDF does not prove that the purple areas are editable vector paths. A vector container can hold an embedded raster image, and some downloads are only raster previews saved in a vector format. Open the file and inspect it. Selecting the purple area should reveal paths with a solid fill or a swatch, not an image object or a flattened bitmap. Also confirm the document color mode, since an RGB file sent to a printer may be converted in ways that shift the purple.

Being able to download a logo does not grant permission to recolor it, change its palette or reuse its typography. Fonts and trademarks carry their own license and usage terms. Changes to an existing brand's purple should follow that brand's guidelines or have the owner's approval.

What this guide cannot confirm

No specific logo, brand specification, print profile or test measurement was supplied for this article. It therefore does not give a definitive formula for any particular purple. Exact CMYK proportions, spot-color matches and on-press results depend on the chosen profile, paper and printer, and need to be confirmed with a proof rather than taken from a general recipe.