Color Recipe Calculator

This calculator turns a three-color dye recipe into exact weights you can put on a scale. You enter yellow, red/magenta, and blue/cyan as relative "parts" — not percentages that need to add to 100 — and the tool normalizes them by dividing each part count by the sum of all three, giving each dye a fraction of the total mix. That fraction is then applied two ways: it splits your target dye depth (% OWF, meaning percent on the dry weight of the fiber) into an individual % OWF for each primary, and it splits the absolute dye weight (fiber weight × total depth ÷ 100) into grams of yellow, red, and blue to weigh out. The underlying idea is subtractive color mixing, the same logic behind mixing paint or ink: combining primaries in different ratios shifts the resulting hue, while the total depth number controls how saturated or pale the overall color comes out.

Worth flagging up front: it's a proportional splitter, not a color-matching engine — it has no data on what hue a specific yellow-red-blue combination actually produces on your fiber, so you'll still want a dye sample swatch or supplier's shade card to translate "40/35/25 parts" into an expected color. It also assumes all three dyes behave similarly in the bath (similar strike rate and exhaust), which isn't always true across different dye classes. And because the fractions are purely relative, doubling all three part values changes nothing in the output — only the ratio between them, and the separate total depth field, actually move the numbers.