Design tools on ToolzPedia give developers, designers, and content creators precise control over colour and visual style without needing a desktop application like Photoshop or Illustrator, or a paid design subscription. Colour is one of the most fundamental elements of visual design, and working with it precisely requires moving fluently between several different colour spaces depending on context: HEX values are the standard in CSS and HTML, RGB values are used throughout code and raster image editing, HSL (hue, saturation, lightness) makes it intuitive to adjust the lightness or saturation of a colour while keeping the underlying hue consistent, and CMYK is the colour model required for print production, since printers mix cyan, magenta, yellow, and black ink rather than emitting red, green, and blue light like a screen. The Color Picker supports all four formats with live two way conversion, meaning a change in any one format immediately updates the others, alongside a visual canvas picker for selecting colour by eye and a full hue, saturation, and lightness slider set for precise numeric adjustment. This is built primarily for web developers: every output value is clean and copy paste ready, formatted exactly as it needs to appear in a CSS file or design tool with no extraneous formatting or explanation text to strip out. The Gradient Generator produces CSS ready linear and radial gradient code with adjustable colour stops, angle control for linear gradients, and precise positioning for each stop along the gradient. CSS gradients are used constantly in modern web design, from subtle background textures to prominent hero section overlays, but writing the underlying gradient syntax by hand and getting the stop percentages and angle exactly right through trial and error in a text editor is slow. The generator provides an immediate visual preview alongside the generated code, so the two stay in sync as you adjust settings. Both tools in this category are aimed specifically at the moment in a design or development workflow where you know roughly what you want visually but need the precise numeric value or code to actually implement it. All processing happens entirely in the browser using standard web APIs, with no data transmitted anywhere and no account required. As with the rest of ToolzPedia, the category is intentionally narrow rather than attempting to replace a full design application: it exists for the specific, recurring moments where a developer needs an exact colour value or a piece of working gradient CSS, not for building a complete visual composition from scratch. Further colour and layout utilities, such as palette generation and contrast checking for accessibility, are planned as natural extensions of this category.