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Colour Theory and Management in Photoshop

In this tutorial we look at colour. Perhaps one of the most important yet overlooked aspects of websites is the use of colour. If you're serious about creating a website and developing graphics that will be suitable, the best place to start is to take a look at the starting places of all images: perception.

Once you understand the way that colours are perceived and made, we look at the different methods of colour management in Photoshop, which to use when and the pros and cons of each.

Photoshop: Slicing Hybrid Images

We know when to optimise an image as a JPG and when to use GIF, but what about hybrid images, composed of areas of great colour gradient, and other areas with flat colour or text? In this article, Gavin Cromhout - DMXzone's Photoshop Yoda - shows you how to optimise hybrid images, slicing and optimising, locking important colours to produce a seamless reduced-size image.

The tools Gavin uses are Photoshop and ImageReady, but the main concepts are appropriate for web designers whatever image editor they are using.

This tutorial is suitable for beginners upwards; we've seen lots of professional images out there that are badly optimised!