Mix and Match
In using color chips or disks purchased from your supplier, you are not limited by the colors provided. You can blend and mix your own to achieve any shade you like. With a bit of practice and a color chart (available at art stores), you can create a veritable artist's palette.
Paint stores provide free color cards, which give you a visual indication of how much color to white (in this case, white wax) you need to get almost any shade of almost any color. These are excellent guides to have around. You can also use them to make notes on for future reference.
Remember that you are starting with white, not with color. So, for example, just a smidge of blue in white wax will give an Easter egg–blue pastel. A tiny bit of red added will result in a lovely lavender pastel. For full-blooded colors, such as bright orange, you want to blot out the white base with color.
You can purchase a whitener that will make the dyes opaque (or whiter), for use in making pastel-colored candles. When deciding how much dye of which color to use, remember to take into account the color of your wax and its opacity. Also bear in mind whether your candle is going to be made of translucent wax (usually pure paraffin). This will make a big difference to the final color when the candle is burned. Pastel
To test the color you have mixed, dip the end of a long, tall block of wax into the colored wax. Allow it to cool completely, then judge the final result. Always remember to add color only in small amounts. You can always increase the intensity.