There are a few different ways to determine the RGB value of a color in Excel. One way is to use the built-in color picker tool. To do this, first select the cell or range of cells that you want to format. Then, click the Home tab on the ribbon and click the drop-down arrow next to the Fill Color button. This will open up the color picker tool. From here, you can either click on a color swatch to select it, or you can enter specific RGB values into the fields provided.
Another way to determine RGB values is to use the eyedropper tool. To do this, select the cell or range of cells that you want to format. Then, click the Home tab on the ribbon and click the Eyedropper button. This will open up the eyedropper tool. You can then click on any color in your workbook to select it and see its RGB values.
You can also use a formula to determine RGB values. The ROUND function can be used to round numbers to a specified number of decimal places. For example, if you have an RGB value of (100,150,200), you can use the following formula to round it to two decimal places:
This will give you a value of 0.39.
You can also use conditional formatting to highlight cells that contain specific RGB values. To do this, select the cells that you want to format and then click the Home tab on the ribbon. Click Conditional Formatting and then Highlight Cell Rules. From here, you can choose from a variety of options, such as equal to, greater than, less than, etc. For example, if you want to highlight all cells that have an RGB value of (100,150,200), you would choose "Equal To" and then enter those values into the field provided.