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Getting the colourant balance right is key to achieving vibrant results in your epoxy resin artwork or castings. Adding too little may result in a pale effect, while overdoing can affect resin clarity and cure. Here’s how to work out the ideal amount for reliable, bold colour every time.
Recommended Colourant Ratios
For most concentrated colourants designed for epoxy resin, it’s best to use no more than 5% of the total resin mass. This keeps the mixture well balanced for good curing and optimal transparency or opacity, depending on your preference. For example, if you are colouring 100g of resin, avoid adding more than 5g of colourant in total. With products like the Colourfun Liquid Epoxy Resin Colourant, a few drops are often all you need for strong, even coverage.
How to Adjust Colour Intensity
If you’re seeking a subtle, translucent effect, start with a very small amount—just a drop or two in your mix. After stirring thoroughly, check the colour strength and incrementally add more if a bolder tone is needed. Mix thoroughly each time to prevent streaks or patchiness. Highly concentrated pastes and powders, like those found in deluxe sets, can require even less than liquid dyes.
When This Matters Most
- Fine art and jewellery: Overuse of colourant can impact detail and clarity.
- Deep pours or clear castings: Too much pigment can interfere with resin curing and reduce transparency.
- Mixing multiple colours: Keep total pigment under control to avoid problems with setting.
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Related guides
Achieving reliable colour in epoxy resin is all about adding pigment bit by bit and staying within the recommended limits. For more on the variety of colourants you can use, explore our main guide to epoxy resin colourants.