Color Picker (in Essential Graphics) not working correctly

Hi, here is my problem:

• In a new project I create a new 1080p25 sequ
• Rectangle Tool -> create rectangle shape
• (In the Essential Graphics Panel:) Set Fill Color to #A1B2C3
• Create a 2nd shape, this time a circle
• Mark the circle with the Selection Tool
• (In the Essential Graphics Panel:) click on the eye dropper icon next to Fill
• Pick the color trom the rectangle
• In my case the color of the circle is now #9FADBE – if the program monitor (with the gaphic in) is placed on the iMac
• And if I move the program monitor to my 2nd screen (HP monitor) the color of the circle is #91A4B7

Do you know the problem? What is wrong here?

TIA

HARDWARE

iMac, 8-Core Intel Core i7 @3,8 GHz, 32 GB ram, AMD Radeon Pro 5500 XT

2nd monitor: HP P27q G4

SOFTWARE

macOS Ventura 13.0.1 (22A400)

PP Version 23.0.0 (Build 63)

w/ Compass, Drag Zoom Pro, Premiere Composer