How to make purple colour is one of the most searched questions among artists, painters, interior designers, and DIY enthusiasts. Purple sits between red and blue on the colour wheel, making it one of the most versatile and visually rich colours in existence. From deep royal purples to soft lavender tones, the range of shades achievable through mixing is surprisingly wide. Yet many people end up with muddy, dull results simply because they do not understand the basics of colour mixing.
Getting purple right depends on more than just combining red and blue. The specific shades of red and blue used, the ratio between them, and the medium — whether paint, digital, or dye — all determine the final result. Furthermore, small adjustments in the mixing process can shift the colour dramatically toward warmer or cooler tones. This guide breaks down everything needed to mix purple colour accurately, covering shade variations, common mistakes, and practical tips for different mediums and applications.
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The Basic Formula: What Colours Make Purple
The foundation of how to make purple colour starts with two primary colours:
- Red + Blue = Purple
However, not every red and blue combination produces a clean, vibrant purple. The outcome depends heavily on the undertones within each colour used.
- Warm red + cool blue — produces a rich, deep purple
- Cool red (like crimson) + ultramarine blue — creates a vivid, bright purple
- Warm red + warm blue — often results in a muddy, brownish purple
- Equal parts red and blue — produces a standard mid-tone purple
Therefore, choosing the right shades of red and blue is just as important as the mixing ratio itself.
How Ratios Change the Purple Colour
Adjusting the ratio of red to blue shifts the purple color significantly. Consequently, small changes in proportion produce very different results.
- More blue than red — pushes the purple toward a cooler, darker violet tone
- More red than blue — creates a warmer, reddish-purple closer to magenta or plum
- Equal ratio — delivers a balanced, neutral purple
Additionally, adding white lightens the purple toward lavender. Adding black deepens it toward eggplant or indigo. These adjustments give full control over the final shade without needing to start over.
Different Shades of Purple and How to Mix Them
Lavender
- Mix purple with a generous amount of white
- Add a small touch of blue to keep it cool and soft
- Lavender works beautifully in bedroom palettes and floral illustrations
Violet
- Use more blue than red in the base mix
- Avoid warm-toned reds — they pull the colour away from violet
- Violet is closer to blue on the colour wheel and reads as cooler and deeper
Plum
- Start with a red-heavy purple base
- Add a small amount of black or dark brown to deepen the tone
- Plum reads as rich and warm — ideal for autumn-themed designs and interiors
Mauve
- Mix purple color with white and a hint of grey
- The result is a muted, dusty purple with a sophisticated, vintage quality
- Mauve works well in fashion, branding, and soft interior palettes
Indigo
- Use significantly more blue than red
- Add a touch of black to darken without dulling
- Indigo sits almost at the edge of blue and is one of the deepest purple colour shades available through mixing
How to Make Purple Colour in Different Mediums
In Acrylic and Oil Paint
- Use cadmium red or alizarin crimson with ultramarine or cobalt blue
- Mix on a palette rather than directly on canvas for better control
- Start with blue as the base and add red gradually — blue is the stronger pigment
In Watercolour
- Watercolour mixing requires less pigment overall
- Use transparent red and blue pigments for a clean, luminous purple
- Avoid opaque or chalky colours — they produce flat, dull results
In Digital Design
- Purple colour in digital formats uses the RGB or CMYK model
- In RGB: combine high red values with high blue values and low green values
- A standard purple in RGB sits around R:128, G:0, B:128
- In CMYK: mix magenta and cyan in varying ratios to achieve different purple tones
In Fabric Dyeing
- Combine red and blue fabric dyes in equal parts as a starting point
- Test on a small fabric swatch before committing to the full piece
- The fabric material absorbs dye differently, so results may vary from paint mixing
Common Mistakes to Avoid When Mixing Purple
- Using the wrong red: Orangey reds contain yellow undertones, which neutralise blue and produce brown instead of purple
- Overmixing: Excessive mixing muddies the colour and kills vibrancy
- Skipping the palette test: Always test the mixed purple colour on a spare surface before applying it to the final piece
- Adding black too early: Black is powerful and quickly overpowers the mix — add it in tiny increments only
- Ignoring medium differences: A colour mix that works in acrylic may not translate the same way in watercolour or digital formats
Conclusion
How to make purple colour is a straightforward process once the logic of colour mixing is understood. Red and blue form the base, but the specific shades, ratios, and medium determine everything about the final result. Moreover, small adjustments — more blue for violet, more red for plum, white for lavender — unlock a full spectrum of purple shades from a simple two-colour starting point.
Whether the application is fine art, interior design, graphic work, or fabric, the principles remain consistent. Knowing how to make purple colour accurately — across mediums, ratios, and shade variations — turns a simple mix into a fully controlled creative decision. Purple colour, in all its variations, becomes completely achievable with the right knowledge and a little practice.
FAQs
Q1. What two colours make purple?
Red and blue mixed together make purple. The specific shades and ratios determine the exact tone.
Q2. Why does my purple look brown?
Warm-toned reds with yellow undertones neutralise blue and produce brown instead of purple.
Q3. How is lavender made from purple?
Add white to a standard purple mix. A small touch of blue keeps the tone cool and soft.
Q4. Can purple be made without blue?
Not traditionally. Blue is essential to the purple colour mix. Without it, the result shifts toward red or pink.
Q5. What is the difference between violet and purple?
Violet is a spectral colour with more blue. Purple is a mixed colour sitting between red and blue with warmer tones.
