If you would like to change the font size of the Text in the legend (Colormap), please follow these steps: a) Click on File > Preferences… b) Select “Graphics” tab, go to “Colormap Settings” c) Change value of drop-down “Text Behavior” to “Fixed Size” d) Change value of the field “Fixed Font Size” to whichever value you would like it to have e) Redraw colormap You might have to resize colormap manually after this step for fitting the new font size as it won’t be automatically resized anymore. Currently we don’t support changing the font type of the colormap in Fluent. This is noted as enhancement for a future release.