contrast/apca_contrast
library
Classes
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LstarRange
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Represents a range of L* values that produce the same APCA Y value.
Functions
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apcaYToLstarRange(double apcaY, {bool debug = false})
→ LstarRange
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Given an APCA Y value, return the range of L* values that could produce it.
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darkerBackgroundApcaY(double textApcaY, double apca, {bool debug = false})
→ double
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darkerBackgroundLstar(double textLstar, double apca, {bool debug = false})
→ double
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darkerBackgroundLstarUnsafe(double textLstar, double apca, {bool debug = false})
→ double
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Returns the L* of a darker background that achieves
apca contrast
with text at textLstar.
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darkerTextApcaY(double backgroundApcaY, double apca, {bool debug = false})
→ double
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darkerTextLstar(double backgroundYLstar, double apca, {bool debug = false})
→ double
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darkerTextLstarUnsafe(double backgroundLstar, double apca, {bool debug = false})
→ double
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Returns the L* of a darker text that achieves
apca contrast
with background at backgroundLstar.
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findBoundaryArgbsForApcaY(double apcaY)
→ List<int>
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Finds sRGB boundary colors that produce the given apcaY.
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lighterBackgroundApcaY(double textApcaY, double apca, {bool debug = false})
→ double
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lighterBackgroundLstar(double textLstar, double apca, {bool debug = false})
→ double
-
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lighterBackgroundLstarUnsafe(double textLstar, double apca, {bool debug = false})
→ double
-
Returns the L* of a lighter background that achieves
apca contrast
with text at textLstar.
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lighterTextApcaY(double backgroundApcaY, double apca, {bool debug = false})
→ double
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lighterTextLstar(double backgroundLstar, double apca, {bool debug = false})
→ double
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lighterTextLstarUnsafe(double backgroundLstar, double apca, {bool debug = false})
→ double
-
Returns the L* of a lighter text that achieves
apca contrast
with background at backgroundLstar.
