Maps
Mapping uses lighter colors on darker backgrounds to reflect the brand’s tone, but context decides the final foreground and background.
Prominent boundaries and features, such as roads, topographic markers, transit lines, trails and waterways, keep consistent outline colors and weights in order of importance. Overlays can be any of the brand colors, or a combination of brand colors and patterns.

Points
Small dots carry the majority of data on maps. Use another marker only when a dot can’t.
Labels
Labels are clearly outlined and defined, with enough contrast to read on screen or in print. When necessary, labels sit with a contextually appropriate icon.
Iconography
In-house digital maps use Maki, the open-source icon set, under the CC0 license.
Density and choropleths

For choropleth styles, see Information visualization.