Each red, green and blue color is typically expressed as an 8-bit number in decimal (0 to 255) or in hexadecimal (00 to FF). For example, solid red is 255,0,0 in decimal or FF,00,00 in hex.

Essentially, Colordot is a color selection tool for the rest of us; through some simple gestures, you’ll create one or more colors, get its hex triplet, and assign it to a palette. After a lengthy ...