Your Tumblr theme sets the background color of each of your posts. Tumblr also offers you the option to edit your theme to further customize your design. ... CSS, you can add a colored background ...

The name of the element to style, referred to as the CSS selector, is followed by braces, within which various attributes, such as font-size and background-color are assigned values. The World Wide ...

HSV color is also composed of ... so they can be used as they are for web design. CSS Gradient ... an app that allows you to fine-tune the background and text color of your web design for free.