Palette Generator
Create harmonious color palettes
#63adf1
rgb(99, 173, 241)
#6389f1
rgb(99, 137, 241)
#6366f1
rgb(99, 102, 241)
#8463f1
rgb(132, 99, 241)
#a763f1
rgb(167, 99, 241)
Online Color Palette Generator - Harmonies and CSS Export
Color theory fundamentals for web designers
Color theory is fundamental to building web designs that are attractive, functional and accessible. Colors evoke specific emotions and steer user attention through the interface. A well chosen palette improves the readability of your content, establishes a clear visual hierarchy, reinforces brand identity and recognition, and creates a cohesive, professional user experience. This tool generates harmonious palettes from the mathematical relationships of the color wheel, so every combination is visually balanced and pleasant for any design project.
What are the types of color harmony?
The main color harmonies used in design are: analogous, three colors adjacent on the wheel, which create soft, natural, cohesive designs ideal for backgrounds and calm environments; complementary, colors opposite each other at 180 degrees, which produce high contrast and vibration and suit calls to action and emphasis; triadic, three colors evenly spaced at 120 degrees, which offer vibrant balance and versatility; split-complementary, one color plus the two neighbours of its complement, which gives moderate contrast with more options; and monochromatic, variations of a single hue, which is elegant, minimal and always harmonious.
How do you implement color palettes in modern CSS?
When implementing a palette in modern CSS, use custom properties to keep things consistent and theming easy: define the base colors on :root and consume them with var(--color-primary). Create both literal variables (--blue-500, --gray-200) and semantic ones (--color-primary, --color-text, --color-error) for flexibility. Always check contrast for accessibility: WCAG 2.1 requires a minimum ratio of 4.5:1 for normal text and 3:1 for large text. This tool exports palettes as ready-to-paste CSS, variables and contrast values included.
If you work with this tool, you will probably also find these useful Color Converter, Gradient Generator, UUID Generator, Password Generator.
Frequently asked questions
How many colors should a web design palette contain?
An effective web palette usually has five to seven core colors: one or two primary brand colors, one secondary color for variety, one accent color for calls to action, and two or three neutrals (white, greys, black) for text, backgrounds and borders. Fewer colors produce cleaner, more consistent designs that are easier to maintain. Too many colors lead to chaotic interfaces that are hard to apply consistently, so every extra color should earn its place with a clear purpose.
How do I choose the right primary color for my brand?
Think about color psychology and your target audience. Blue signals trust, professionalism and technology, which is why finance and tech lean on it. Green evokes nature, growth and health for eco and wellness brands. Red communicates energy, urgency and passion for food and entertainment. Orange reads as creative and approachable for startups and consumer products. Purple suggests luxury, creativity and wisdom for premium and education brands. Black and grey convey elegance and sophistication in fashion and luxury. Research your industry and competitors so you differentiate without breaking user expectations.
What is color contrast and why is it critical for accessibility?
Contrast is the difference in luminance between two adjacent colors. High contrast improves readability for everyone and is essential for users with visual impairments. WCAG 2.1 requires a minimum ratio of 4.5:1 for normal text (below 18pt, or 14pt bold), 3:1 for large text (18pt or larger, or 14pt bold and up), and 3:1 for interface components and graphical elements. Always check the contrast between text and background and between interactive elements. Failing this is not only exclusionary, it can carry legal consequences.