Pigment Lab
Use this calculator to tint OneRock microcement. Choose your colour and texture, enter the area, and it gives the exact pigment weights so every batch comes out the same colour.
Area to cover, plus a waste allowance.
Tap a colour — the textures below preview in it.
Tap the grain you're working in — coverage and the pigment formula update to match.
How this calculator works — Pigment formulas are based on M grain as the reference. As the quartz grain size increases, the base of the material becomes greyer — meaning more pigment is needed to achieve the same depth of colour. Larger grains also have a naturally cooler, lighter base, so the calculator adds warmth to bring the finished result back in line with M grain. For L grain, +3.5 g/kg White is added. For XL and XXL grain, +6 g/kg White, +0.2 g/kg Yellow, and +0.05 g/kg Red are added. These adjustments are applied automatically.
Even with adjusted formulas, different grain sizes will always look slightly different from one another. The way light catches a coarser surface means the same colour can appear warmer, cooler, lighter or deeper depending on texture — this is a natural characteristic of the material, not a mixing error.
Always make a sample board for client reference before starting any job. This ensures the client has approved the exact colour and texture combination they will receive.