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Search 4,900+ named colors, generate palettes and gradients, convert HEX, RGB and HSL, and check WCAG contrast — 50+ free color tools for designers and developers.

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Color of the Day

Today's featured color with insights and inspiration

Blurple

#5544DD

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Description

Today's vibrant Blurple carries the timeless appeal of the sky and sea. This universally beloved hue promotes calm confidence and clear communication.

Fun Fact

Ancient Greeks and Japanese didn't have a word for blue — Homer described the sea as 'wine-dark,' and the Japanese word 'ao' covered both blue and green.

Psychology

This hue suppresses appetite and promotes productivity — blue-lit workspaces show measurable improvements in task completion rates.

Usage Examples

Social media platforms Financial services Healthcare portals Social media graphics
This Season

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Curated Combos

Popular Color Palettes

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Quick Color Tools

Instant access to essential color utilities

Colors from an Image

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Full Palette from Image

Gradient Maker

Full Gradient Generator

Contrast Check

Aa
Aa
Full Contrast Checker

Color Picker

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Advanced Color Wheel
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From Our Blog

Color theory, design tips, and inspiration from the 66Colorful team.

Good to Know

Frequently Asked Questions

Common questions about colors, palettes, and design — answered by the team behind 66colorful's 50+ free tools.

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A HEX color code is a 6-digit hexadecimal number used to represent colors in web design and digital media. It consists of three pairs of characters representing Red, Green, and Blue values (e.g., #FF5733). HEX codes are the most common format for specifying colors in CSS and HTML.

You can use our HEX to RGB converter tool. Simply enter your HEX code and get instant RGB values. Each pair of HEX digits converts to a number between 0-255 for Red, Green, and Blue channels. For example, #FF5733 converts to rgb(255, 87, 51).

Color contrast is the difference in luminance between foreground and background colors. The Web Content Accessibility Guidelines (WCAG 2.1) require a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text to ensure readability for people with visual impairments. Use our Contrast Checker tool to verify your color combinations.

Use our Color Wheel tool to select a base color, then choose a harmony type (complementary, analogous, triadic, split-complementary, or tetradic) to generate a professionally balanced palette. You can also extract palettes from images using our Palette from Image tool.

RGB (Red, Green, Blue) is an additive color model used for digital screens where combining all colors produces white light. CMYK (Cyan, Magenta, Yellow, Key/Black) is a subtractive color model used in print where combining all colors produces black. Use our Color Converter to switch between formats.

Use our Color Blindness Simulator to preview how your design appears to people with different types of color vision deficiency, including protanopia, deuteranopia, and tritanopia. Our Palette Accessibility Matrix can check all color combinations in your palette at once.