Conditional format if cell match found in another range of cells

[Guest]

I have a list of codes on Sheet 2 (A1:A90). When I enter data into cell C1 on
Sheet 1, I want it to look at the codes on Sheet 2 and if the code I entered
matches any of the ones in the list, then make the text in that cell blue or
bold. I understand about naming the cell range, but can't figure out the
matching part.

 

[PCLIVE]

Unfortunately, you can't use Conditional Formatting based on other
Worksheets or Workbooks. It has to be used on the same worksheet. With
that in mind, you may need to use a helper cell on the same sheet. For
example, in M1 use the following formula.

=COUNTIF(Sheet1!A1:A90,A2)

The use conditional formatting. Click drop-down and select "Formula Is".
Then enter the formula below:

=M1>0

HTH,
Paul

 

[Biff]

Create this named formula:

Insert>Name>Define
Name: IsMatch
Refers to: =COUNTIF(Sheet2!$A$1:$A$90,Sheet1!$C$1)
OK

Select cell C1 on Sheet1 and set the formatting.
Format>Conditional Formatting
Formula Is: =IsMatch
Click the Format button
Select the style(s) desired
OK out

Biff