---
name: "ColorRGBToHLS"
section: "3w"
platform: "linux"
package: "libwine-dev"
version: "1.4.1-4"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/ColorRGBToHLS"
---

# ColorRGBToHLS(3w)

## NAME

**ColorRGBToHLS** (SHLWAPI.@)

## SYNOPSIS

VOID ColorRGBToHLS\
  (\
   COLORREF *cRGB*,\
   LPWORD   *pwHue*,\
   LPWORD   *pwLuminance*,\
   LPWORD   *pwSaturation*\
  )

## DESCRIPTION

Convert an rgb **COLORREF** into the hls color space.

## PARAMS

*cRGB* **\[In\]**  Source rgb value.

*pwHue* **\[Out\]**  Destination for converted hue.

*pwLuminance* **\[Out\]**  Destination for converted luminance.

*pwSaturation* **\[Out\]**  Destination for converted saturation.

## RETURNS

Nothing. *pwHue*, *pwLuminance* and *pwSaturation* are set to the converted values.

## NOTES

Output **HLS** values are constrained to the range (**0..240**). For Achromatic conversions, Hue is set to **160.**

## IMPLEMENTATION

Declared in **"shlwapi.h"**.

Implemented in **"dlls/shlwapi/ordinal.c"**.

Debug channel **"shell"**.