====== ArcGIS REST API: ColorScheme ======

Needed to look up ArcGIS's JSON color settings as served by the REST API. So it is listed on their [[https://developers.arcgis.com/documentation/common-data-types/symbol-objects.htm#GUID-26A800AE-CAC8-40E6-B381-B3CD517A45C1|Common Data Types -> Symbol objects]] and they indeed use RGBA.

To quote from [[https://developers.arcgis.com/documentation/common-data-types/symbol-objects.htm|ESRI's website]]:

===== Color =====

Color is represented as a four-element array. The four elements represent values for red, green, blue, and alpha in that order. Values range from 0 through 255. If color is undefined for a symbol, the color value is null.

===== JSON Syntax =====

''[ <red>, <green>, <blue>, <alpha> ]''

===== JSON Example =====

''[ 67, 0, 255, 40 ]''


Also worth a read: [[https://en.wikipedia.org/wiki/RGBA_color_space]]





{{tag>GIS ESRI ArcMap Color}}


~~DISCUSSION:closed~~