Can you recommend a simple Linux application that shows the color given a hex code and returns the hex given a color?
gpick comes close by showing the hex code of a picked color, but it does not seem to go the other way.
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Free/libre. Gratis. Available in many distribution package archives (e.g., as
gcolor2 in Debian).
For each color it displays its hex code, its hue/saturation/value values, and its red/green/blue values.
enter a hex code,
enter hue/saturation/value and red/green/blue values,
enter a color name,
pick a color (from anywhere on the screen),
choose a color (from the color wheel).
I picked a color from your avatar, the tool tells me that it’s
It also allows you to save a color. The list shows the color, its hex code, and a name you can choose.