An intermediate concept between the key color for a UI theme, and a full
color scheme. 5 tonal palettes are generated, all except one use the same
hue as the key color, and all vary in chroma.
Constructed by a set of values representing the current UI state (such as
whether or not its dark theme, what the theme style is, etc.), and
provides a set of TonalPalettes that can create colors that fit in
with the theme style. Used by DynamicColor to resolve into a color.
HCT, hue, chroma, and tone. A color system that provides a perceptually
accurate color measurement system that can also accurately render what
colors will appear as in different lighting environments.
A Dynamic Color theme with low to medium colorfulness and a Tertiary
TonalPalette with a hue related to the source color. The default
Material You theme on Android 12 and 13.
In traditional color spaces, a color can be identified solely by the
observer's measurement of the color. Color appearance models such as CAM16
also use information about the environment where the color was
observed, known as the viewing conditions.