HexLab is a browser-based colour tool designed for web developers, UI designers and anyone who works with colour codes. The Color Converter accepts input in three formats, HEX, RGB and HSL, and instantly converts between all three. This is useful when a design specification gives you a colour in one format but the CSS property you're working with requires another.
The Visual Color Picker provides an interactive colour selection canvas where you can click or drag to pick any colour, with the hue slider below controlling the base hue. The picked colour is immediately shown in all three formats with a copy button. This is faster than opening a full graphics application just to grab a colour value.
The RGB and HSL Mixer cards let you build colours by adjusting individual channel sliders, with the gradient on each slider updating dynamically to show how adjusting that channel affects the colour. The sliders update in real time as you drag, making it easy to find the exact shade you're looking for.