Module utils 

Math and color-space conversions shared by the dynamic color port.

Constants

WHITE_POINT_D65

The D65 white point in XYZ: white on a sunny day.

Functions

argb_from_linrgb

Opaque ARGB from linear RGB channels in 0.0..=100.0.

argb_from_lstar

The gray with lightness lstar.

argb_from_rgb

Opaque ARGB from 8-bit channels.

argb_from_xyz

Opaque ARGB from XYZ.

blue_from_argb

The blue channel of an ARGB color.

clamp_double

input limited to min..=max. Unlike f64::clamp this accepts min > max (returning min for anything below it), which the 2025 color spec relies on and which must not panic.

delinearized

A linear RGB channel in 0.0..=100.0 as 8-bit sRGB, clamped.

difference_degrees

The distance of two angles on a circle, in degrees.

green_from_argb

The green channel of an ARGB color.

lab_from_argb

Lab* of an ARGB color.

lerp

start at amount 0 and stop at amount 1.

linearized

An 8-bit sRGB channel as linear RGB in 0.0..=100.0.

lstar_from_argb

L* of an ARGB color.

lstar_from_y

L* of a Y value.

red_from_argb

The red channel of an ARGB color.

rotation_direction

The sign of the shortest rotation from one angle to another; 1 when they are exactly opposite.

sanitize_degrees_double

An angle in 0.0..360.0.

sanitize_degrees_int

An integer angle in 0..360.

signum

-1 below zero, 0 at zero, 1 above zero.

xyz_from_argb

XYZ of an ARGB color.

y_from_lstar

Y in XYZ (relative luminance) of an L* value.