02-19-2015, 10:58 PM
(This post was last modified: 02-19-2015, 11:00 PM by DragonDePlatino.)
Better yet, I'll show you with an image! An image is worth a thousand words, after all.
![[Image: hue_shifting_sphere_by_dragondeplatino-d8iqku8.png]](http://fc09.deviantart.net/fs71/f/2015/050/d/2/hue_shifting_sphere_by_dragondeplatino-d8iqku8.png)
The image on the top is a straight color ramp, and the one on the bottom is a shifted color ramp! Both of these ramps serve their purpose, but many would agree that the bottom sphere looks much better. The sphere on the top only has colors of solid red but the sphere on the bottom shifts its hue as it becomes brighter. It starts with a purple-ish hue of red then becomes more orange as it becomes brighter. But why purple, red and orange? Well...if you look at the color wheel, purple-red-orange are all next to each other, and purple looks darker than orange so it would work better for the shading.
You don't have to hue-shift as much as I've shown here, though. I've exaggerated the technique a bit for my explanation.
The image on the top is a straight color ramp, and the one on the bottom is a shifted color ramp! Both of these ramps serve their purpose, but many would agree that the bottom sphere looks much better. The sphere on the top only has colors of solid red but the sphere on the bottom shifts its hue as it becomes brighter. It starts with a purple-ish hue of red then becomes more orange as it becomes brighter. But why purple, red and orange? Well...if you look at the color wheel, purple-red-orange are all next to each other, and purple looks darker than orange so it would work better for the shading.
You don't have to hue-shift as much as I've shown here, though. I've exaggerated the technique a bit for my explanation.