Enter one format and convert between HEX, RGB (0-255), 0xRRGGBB, and RGB565.
Different projects and toolchains expect different color code formats. Use this quick guide to choose the right format for web UI, firmware constants, and embedded displays.
Use RGB when you need direct control of red/green/blue channels, for example brightness tuning, color math, interpolation, or sensor/LED calibration logic. It is also useful in logs because each channel value is explicit.
HEX is short and readable, so it is common in design handoff, CSS, and docs. If your source color comes from a design file, HEX is usually the fastest input format.
Many embedded and graphics codebases store colors as hexadecimal integer literals like 0x3A7BFD. Choose this format when writing constants in C/C++ headers, lookup tables, or UI theme structs.
RGB565 reduces memory bandwidth and framebuffer size by storing color in 16 bits. It is widely used in SPI/I80 display drivers and microcontroller GUI stacks. Because precision is reduced, converting from 24-bit RGB can introduce small color differences.
For RGB565-focused conversion, use RGB565 to HEX Converter.
Start with HEX or RGB from design input, use 0xRRGGBB for firmware constants, and convert to RGB565 only when your display pipeline requires 16-bit color.
RGB565 reduces color precision, so converting back to RGB gives approximate 8-bit values.
Yes. HEX and RGB both represent 24-bit color; they are different notations of the same value.
Use it when your codebase or graphics API expects integer color constants instead of strings.
RGB565 to HEX Converter · Color Picker · Image Converter · HEX ⇄ ASCII ⇄ Binary