Smart Colors
Professional color tools for designers and developers. No signup required. Instant color conversion, palette generation, and CSS output.
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Generate beautiful color palettes based on color theory
Create beautiful CSS gradients for your designs
background: linear-gradient(90deg, #FF6B6B 0%, #4ECDC4 100%);
Explore shades, tints, and tones of your color
Understanding color theory and web colors
A color wheel is a circular diagram that shows the relationships between colors. It's a fundamental tool in color theory that helps designers understand how colors work together and create harmonious color schemes.
The traditional color wheel includes primary colors (red, blue, yellow), secondary colors (green, orange, purple), and tertiary colors. Modern digital color wheels often use the RGB color model for screen-based design.
HEX (hexadecimal) is a six-digit code used to represent colors in web design and digital media. Each HEX code consists of three pairs of characters that represent the red, green, and blue components of a color.
For example, #FF6B6B represents a coral color where FF (255) is red, 6B (107) is green, and 6B (107) is blue. HEX codes are widely used in CSS, HTML, and design software.
Both HEX and RGB represent the same colors but in different formats. HEX uses hexadecimal notation (#FF6B6B) while RGB uses decimal values rgb(255, 107, 107).
HEX is more compact and commonly used in web development, while RGB can be more intuitive for understanding color composition. RGBA adds transparency (alpha) to RGB values.
Everything you need to know about our color tools