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.
Discover our most popular color tools designed to enhance your creative workflow
Pick a color on an interactive HSV color wheel, see ten harmony types as markers, check WCAG contrast and export the palette as CSS, SCSS or JSON.
Open the toolFree contrast checker that tests text and background colors against WCAG 2.2 AA and AAA, shows the APCA score and suggests accessible fixes for designers and developers.
Upload, paste or link a photo and get a 3 to 12 color palette with HEX codes, share percentages and contrast badges. Edit, lock and export for designers and developers.
Preview how images and colors look with protanopia, deuteranopia, tritanopia or achromatopsia, and flag color pairs that become hard to tell apart. Free, in your browser.
Create linear, radial and conic CSS gradients with up to 8 color stops, check text contrast, and export CSS, Tailwind, SCSS, SVG, PNG or JSON.
Convert any color between HEX, RGB, HSL, HSV, HWB, CMYK, OKLCH and Lab, edit channels, check contrast on white and black, and export CSS, JSON or Tailwind code.
Today's featured color with insights and inspiration
This vivid Rock Lobster commands attention with its fiery energy, evoking passion, urgency, and emotional intensity that has captivated artists and designers for centuries.
Red is the first color babies can see after black and white, and it can increase heart rate by up to 9% when viewed.
Red activates the fight-or-flight response, increasing alertness and physical energy. It's linked to desire, ambition, and decisive action.
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Color theory, design tips, and inspiration from the 66Colorful team.
Silver color hex code basics: why one value cannot shine, and how gradients and contrast checks help you fake silver, bronze and copper on screen.
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Get the hex color code for light blue, light pink and lavender, plus pairing tips and contrast checks that keep pastel interfaces readable.
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A hex color code for skin tone does not exist as one value. Learn to sample photos, build lightness and undertone steps and test your swatches.
Read PostCommon questions about colors, palettes, and design — answered by the team behind 66colorful's 50+ free tools.
Explore all toolsA 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.