Color

Color Ramp #1 Linear Progression

Color Ramp #2 Adjusted Progression

Color Ramp #3 ColorBrew

While the three different color palettes all begin and end similarly, the steps between the categories varies with each method to create unique values. In the linear progression equally progresses through the steps and shows the six steps. In the adjusted progression, the first step from the darkest color is about 1/3 higher than the average step to distinguish the darker colors, but the lowest step is 1/3 lower than the average because the light colors are more easily distinguished.  In the ColorBrewer application, the sequential palette that most closely relates to the other palettes is the multi-hue from dark green to a pale blue. While this palette contains slightly more blue through the progression, the added hue easily distinguishes the categories. The interval is not set at a constant rate or based on math equation, but visible differences and approaching a bluer tint. This closely resembles the second scale, but is more clear with the final value almost white and the previous colors clearly distinguished from the step above.