To find the tint or shade you’re looking for, use a chart like the one below (available here in detail for download). Identify the tint in one of the middle colors, and then see to which saturated hue it corresponds by tracing to the color on the closest edge.
This spectrum of blends is to provide a greater range of tints of the colors as they get blended with lighter or darker greys. Why is this important? For one, tinting actually causes a perceptual shift in hue. Even though a color sample in the computer will prove that the hue hasn’t changed, to the human eye, it seems that way. Lighter tints gravitate towards their neighbor, sometimes warmer (a red tinted lighter tends to look more like magenta, while a yellow tinted tends to look greenish, with the darker colors seeming a bit warner). This is exactly why we can’t rely on identifying the hue first in our minds. In the case of tints, the physical color will invariable be something else, albeit close by in hue.
The next challenge is of course mapping a given saturated color on the chart to the tube colors in your studio. We’ll address this mapping in later topics. For now, please use your best judgment visually mapping the chart colors to the closest tube color for mixing.
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