Color picker bug (10.6.2) (RGB to HSB)

1) open the color picker (e.g. in TextEdit, Format>Font>show colors command shiftC).
2) choose the sliders (the second icon)
3) set the popup menu to RGB Sliders
4) set for exemple red to 159, green to 135 and blue to 141
5) set the popup menu to HSB Sliders
6) you will see H:345°, S:15% and B:62%
7) click on a slider, for exemple the Brightness slider. The value 62% is not changed, but you can see that the color is darker in the sample field.
8) set the popup menu to RGB
9) you can see new value : red:138, green:114 and blue:121
(HSB for this is : H:342°, S:17% and B:54%).

Why is the color changed by the click on the slider on HSB ? (in this exemple, the value 62% for brightness is *not changed*).

The same step is tested on a powerpc imac on leopard. No bug.

Can you confirm the bug ?
Can you field a bug report please for this ? (my english is not good).

macbook pro 13", Mac OS X (10.6.2)

Posted on Dec 19, 2009 5:54 AM

Reply
5 replies

Dec 19, 2009 2:27 PM in response to quark67

Your English is fine. If you want to report this issue to Apple, send a bug report or an enhancement request via its Bug Reporter system. To do this, join the Apple Developer Connection (ADC)—it's free and available for all Mac users and gets you a look at some development software. Since you already have an Apple username/ID, use that. Once a member, go to Apple BugReporter and file your bug report or enhancement request. The nice thing with this procedure is that you get a response and a follow-up number; thus, starting a dialog with engineering.

Jan 21, 2010 2:41 PM in response to etresoft

This bug has been around since 10.5, maybe before. The HSB setting in the color picker cannot retain values correctly, particularly if you are using it to sample colors or within any Adobe product. For instance if I'm in Photoshop and click on my foreground color (setting my picker to Apple in preferences), I can input HSB values, click OK and I have that color in Photoshop, but the values are off. If I click on the foreground color again, the values will have shifted by 1 or more numbers. It's really frustrating because I prefer to use HSB over RGB.

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Color picker bug (10.6.2) (RGB to HSB)

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