Color Theory
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Color Scheme, Colour Scheme Chooser Tool - Monochromatic, Analogic, Complimentary, Split Complementary, Triadic, Double Contrast. Html Color Codes, Web Colors - Color Resources, WebsiteTips.com
This colour schemer tool helps you choose colour schemes for monochromatic, analogic, complimentary, split complementary, triadic, and double contrast. It's especially great for exploring color combinations easily and quickly. As you'll see, it automatically creates gorgeous color schemes to use for your Web projects or other projects. The HTML color codes are also provided within this color tool.
This tool was inspired directly by the excellent Creating Color Palettes article by Andy Clarke. It will create 10 shades of the base color, located top-left, at varying degrees of opacity. The top row emulates opacity over a white background, the bottom over black (or colors of your choosing as of v1.4). The opacity values are 100% opaque, 75%, 50%, 25% and 10% on the top row.
tools | color palette creator v1.6.1
Ultimate CSS Gradient Generator - ColorZilla.com
background: #1e5799; /* Old browsers */ background: -moz-linear-gradient(top, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%); /* FF3.6+ */ background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1e5799), color-stop(50%,#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8)); /* Chrome,Safari4+ */
500+ Named Colours with rgb and hex values
This page lists over 500 colours by colour name, Hex value, RGB value and Microsoft Access code number. You cannot specify these colours in HTML and CSS by their colour name but you can use their RGB hexadecimal value, eg: <font color="#800080"> and in CSS you can also use their RGB decimal values, eg:As a designer, color management should be an integral part of your workflow. A website’s color scheme helps shape its identity and therefore should not be carelessly thrown together.
25 Awesome Tools for Choosing a Website Color Scheme