Named color category
Blue Colors
Blue colors are broadly useful reference hues for links, trust signals, product UI, and technical systems.
Indexed blue hex colors
A reference grid selected from Hexpedia CSS, xkcd, Material, Tailwind, and generated static color datasets.
Light Blue
Dark Blue
Muted Blue
How designers use blue
Blue colors are most useful when they are treated as a family rather than a single swatch. Start with the central values for accents, then use lighter versions for surfaces and darker versions for text, borders, or active states. In product interfaces, blue can guide attention, but it should not carry meaning alone; pair it with labels, spacing, and predictable hierarchy. For editorial pages, this family can create a recognizable mood while still leaving room for neutral backgrounds. Always test contrast before using any blue value behind body text, because perceived brightness can shift quickly across adjacent hues.
Combinations with blue
Palette pages use Blue as the nearest stable anchor for this color family.
Build with blue in CSS Forge
Move from reference values into practical CSS experiments with pre-filled generator links.