If this tool helped you, you can buy us a coffee ☕
Provides controllable random color generation for designers and developers, supporting multiple formats and hue filtering.
Click the generate button to start
RGB to HSB Converter
Two-way RGB and HSB/HSV color code converter supporting multiple input formats. Ideal for designers and developers.
Pixel to Centimeter Converter
Accurately convert pixel lengths to physical centimeter dimensions based on PPI (Pixels Per Inch). Ideal for UI design, print layouts, and screen adaptation.
Pixel to Millimeter Converter
Accurately calculate the physical dimensions between pixels and millimeters based on PPI density. Ideal for UI design and print typography.
When you need color inspiration or want to quickly grab a set of usable colors, picking them manually is often inefficient and lacks creativity. This tool uses algorithms to generate random color values within specified parameters, helping you break out of creative ruts. It outputs color codes that can be directly used in CSS, design software, or code. Colors are the fundamental building blocks of visual design, and this tool generates web-standard color representations (such as HEX, RGB, HSL, and HSV). You can fine-tune the hue range, lightness, and quantity to get more targeted random results.
Q: Does the random color generator guarantee harmonious color palettes?
A: No. The core of this tool is "randomness." It generates colors based on mathematical algorithms and does not incorporate color aesthetics or matching logic. The generated colors may visually clash. We recommend using them as a starting point for inspiration, then filtering and adjusting them manually.
Q: What is the difference between HEX, RGB, HSL, and HSV formats, and which one should I choose?
A: It depends on your use case. HEX (e.g., #FF5733) is most commonly used in web development; RGB (e.g., rgb(255, 87, 51)) is used for screen displays and some design software; HSL and HSV are closer to human visual perception of color (Hue, Saturation, Lightness/Value), making programmatic color adjustments easier. HEX is the top choice for web development, while HSL is ideal if you need to dynamically adjust color lightness or darkness.
The "randomness" generated by this tool is a pseudo-random result based on algorithms and your set parameters (hue, lightness). You can generate a maximum of 100 colors at a time; generating too many may cause slight page rendering delays. The generated color codes are safe to copy and use. The tool does not store or upload any of your interaction data. Please note that you should independently verify the readability of generated dark or highly saturated colors against dark or light backgrounds.
For front-end developers, this tool is great for quickly generating UI theme colors or state colors (like success, warning, error). A practical tip: first use the "Warm" range to generate a primary color palette, then switch to a complementary "Cool" range (like blues) to generate accent colors. This quickly establishes foundational color contrast. For example, after generating a primary color like #E67E22 (orange), you can generate an accent color like #3498DB (blue). In HSL mode, you can lock the Hue (H) and only randomize Saturation (S) and Lightness (L) to quickly create a monochromatic palette with varying shades, which is highly effective for designing data series colors in charts.
