RGB to HEX Color Converter Online

Each channel is one byte, and a byte holds exactly 256 states, 0 through 255, so the inputs are bounded at min 0 and max 255. If your source reports channels as fractions between zero and one, multiply by 255 and round: 0.5 becomes 128.

Browsers treat #ff0000 and #FF0000 identically. Brand guidelines and Figma tend to use capitals, CSS files usually go lower case. What matters is consistency across a project, otherwise a search for duplicate color literals in your stylesheets stops matching.

A six-digit code cannot store alpha. There is an eight-digit form where the last pair encodes opacity, but support outside browsers is patchy. For CSS an rgba() value is safer, and a separate HEX to RGBA page in the catalogue produces exactly that.

This page only converts numbers you type; it does not read images. Sample the channels first with an editor eyedropper, the browser developer tools, or an image color analyzer, then carry the three values into the R, G and B fields.

No. The calculation lives in the tab's memory and disappears when you close it, and no history is kept. Copy any code you care about straight into your stylesheet or palette document rather than expecting to find it here later.

Display color profiles and features like True Tone or night shift are the usual cause. The same HEX renders differently on a calibrated monitor and on a phone. Judge shades on a calibrated screen and treat the code itself as the single source of truth.