I thought I would start out with sharing the clay color recipes for three of the Fall 2016 Pantone Fashion Colors that are somewhat similar where mixing is concerned.
Riverside is a cool and calming yet strong shade of blue. Airy Blue is a lighter version of Riverside and Sharkskin has a slight edge with a hint of blue yet considered neutral.
Riverside
2 parts Kato Blue
1 part Kato Violet
2 parts Kato Silver
2 parts White Mix # 1-2 *
Airy Blue
1 part Kato Blue
1/2 part Kato Violet
1 part Kato Silver
7 parts White Mix # 1-2 *
Sharkskin
1 part Kato Blue
1/2 part Kato Violet
6 parts Kato Silver
1 part White Mix # 1-2 *
* Note: These clay color recipes are created using Kato Polyclay. Any of the base color "mixes" used are from my Clay Color System.