Microsoft KB Archive/68563

Values for Hue, Saturation, and Luminance Change Slightly PSS ID Number: Q68563 Article last modified on 10-29-1991 PSS database name: W_PowerPt

2.00

WINDOWS

Summary:

When you use the More Colors dialog box to specify exact values for hue, saturation, and luminance (HSL), the values may change slightly when you return to the dialog box immediately after dismissing it, or when you use the TAB key to change the focus in the dialog box. The red, blue, and green (RGB) values remain unchanged.

The RGB values are used to compute the HSL values, rather than vice-versa. Because the RGB values take precedence, this may result in a slight change in the HSL values, due to the rounding of the computed values to the nearest integer. This is not a problem because the color choices are made from a palette of more than 16.7 million colors and any changes due to rounding are too small to be visible to the human eye.

Copyright Microsoft Corporation 1991.