Cheat Sheet For Watercolor Diy

The Watercolor Cheat Sheet I Actually Use

Most people think a watercolor cheat sheet is just a laminated card showing which pigments mix well together. That's one version. The real one I made for myself covers lightfastness ratings, paper weights that won't buckle, how long different mediums take to dry at room temperature, and the exact ratio of water to pigment for washes that don't turn muddy. It's on my fridge. It's been there since 2018.

What a Cheat Sheet For Watercolor Diy Actually Looks Like

Mine is two pages of A4, printed on matte paper, folded once. The left side has my custom mixing chart. I don't use the standard RGB-to-watercolor conversions because they don't work. Instead, I mapped out which of my ten most-used pigments create clean secondary colors and which ones go brown or gray. For example, cadmium red and phthalo blue should make a nice violet. In practice, they make mud faster than almost anything else. The chart shows me to swap in quinacridone rose instead. Small thing. Huge difference.

The right side has practical reference data. Paper weight in grams per square meter and whether I need to stretch it. Drying times for different layer thicknesses. Which of my brushes hold water best and which ones split after the second coat. None of this comes from a textbook. It comes from ruining expensive paper and pigments until I stopped guessing.

How to Build One Without Overcomplicating It

Start with what you actually own. Don't build a reference for pigments you've never bought. I know people who spend three weeks making elaborate charts for a full set of professional colors when they only use five. That's wasted effort.

Pick your core palette first. For most beginners, that's a primary red, a primary blue, a yellow, a warm and cool black, and maybe a earth tone. Write down the manufacturer and pigment index number for each. PG7, PR101, PB15, PY42 — those codes matter because two different brands can use the same pigment name but completely different lightfastness ratings. Look it up on the manufacturer's site. It takes two minutes per color.

Then test your mixes on scrap paper. Not your good 300gsm cold press. Junk paper from the grocery store works. Apply each pair of colors at the same saturation level and note what happens. Sometimes the result surprises you. Alizarin crimson and sap green don't make a natural-looking foliage green. They make a sad olive. Quinacridone gold and phthalo blue, though, that's a clean secondary green worth using. My workaround was simple. I added a column to the cheat sheet for ambient conditions. I wrote down the humidity range where my working times are reliable and flagged which techniques slow down or speed up outside that window. Above 60% humidity, I allow an extra ten minutes between layers. Below 40%, I work wet-on-dry more often and stop trying to do soft edges unless I'm using a humidifier or a spray bottle. Another thing: paper texture matters more than weight. 300gsm hot press and 300gsm cold press feel completely different under the brush even though they're the same thickness. Hot press slides. Cold press grips. If your washes beading and pulling back, check the paper surface before you blame your technique. I spent a month thinking I had a water control problem before I realized I was using the wrong paper texture for the effect I wanted.

What This Approach Doesn't Cover

A watercolor cheat sheet isn't going to teach you composition or color theory. It won't fix bad drawing skills or help you understand when to stop painting. It also doesn't work if you switch brands frequently. Every manufacturer mixes differently. What worked for Winsor & Newton transparent wash won't necessarily translate to Daniel Smith or Schmincke without retesting. The cheat sheet is only as good as the data you put into it.

If you want something closer to a printable download, the closest thing I have is a Google Sheets version of my chart. It's not fancy. No formulas, no conditional formatting tricks. Just rows of pigment names, pigment indices, lightfastness ratings, and personal notes on mixing behavior. Happy to share it if anyone wants it. It's saved me more hours than anything else I own for this medium.