ColorUtils class

Helper class for color operations.

Constructors

ColorUtils()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

basicColorsFromHex(String hex) → Map<String, int>

Fetches the basic color int values for red, green, blue from the given hex string.

calculateRelativeLuminance(int red, int green, int blue, {int decimals = 2}) → double

Calculates the relative luminance for the given red, green, blue values.

contrastColor(String hex) → String

Calculates the limunance for the given hex color and returns black as hex for bright colors, white as hex for dark colors.

fillUpHex(String hex) → String

Fills up the given 3 char hex string to 6 char hex string.

hexToInt(String hex) → int

Converts the given hex color string to the corresponding int.

intToHex(int i) → String

Converts the given integer i to a hex string with a leading #.

invertColor(String color) → String

Inverts Color Hex code Convert string to (4-bit int) and apply bitwise-NOT operation then convert back to Hex String e.g: convert white (FFFFFF) to Dark (000000). Returns Inverted String Color.

isDark(String hex) → bool

Returns true or false if the calculated relative luminance from the given hex is less than 0.5.

shadeColor(String hex, double percent) → String

Lightens or darkens the given hex color by the given percent.

swatchColor(String hex, {double percentage = 15, int amount = 5}) → List<String>

Swatch the given hex color.

Constants

BASIC_COLOR_BLUE → const String

BASIC_COLOR_GREEN → const String

BASIC_COLOR_RED → const String

HEX_BLACK → const String

HEX_WHITE → const String