Setting a cell's fill RGB color with pywin32 in excel?

Question

I'm avoiding using any other set of modules.

What I am trying to do is set a cell's color in Excel, using the pywin32 libary. So far I've found how to get the cells color:

print xl.ActiveSheet.Cells(row, column).interior.color

and you can set it simply by assigning it in a similar fashion:

xl.ActiveSheet.Cells(row, column).interior.color = 0 #black

My question is how to set the cell's colour in RGB?

I need something called a ColorTranslator to OLE , but I don't know how to access system.drawing since it seems like it's a .NET thing. http://msdn.microsoft.com/en-us/library/system.drawing.colortranslator.toole.aspx

score 13 · Accepted Answer · edited Jun 10 '18 at 20:28

13

interior.color expects a hex value in BGR. If you want to specify in RGB form below code can be used.

def rgb_to_hex(rgb):
    '''
    ws.Cells(1, i).Interior.color uses bgr in hex

    '''
    bgr = (rgb[2], rgb[1], rgb[0])
    strValue = '%02x%02x%02x' % bgr
    # print(strValue)
    iValue = int(strValue, 16)
    return iValue

ws.Cells(1, 1).Interior.color = rgb_to_hex((218, 36, 238))

edited Jun 10 '18 at 20:28

Chen Du

130
2
10

answered Jul 12 '12 at 04:47

Vinayak Kolagi

1,831
1
13
26

3

Seems like the colors are reversed in excel. Passing (255,255,0) shows a blue in the sheet: (0,255, 255). I guess the color is `BGR`. Thanks for the help. – TankorSmash Jul 12 '12 at 17:25

score 11 · Answer 2 · answered Jan 24 '14 at 17:04

Excel can use an integer calculated by the formula Red + (Green * 256) + (Blue * 256 * 256)

def rgbToInt(rgb):
    colorInt = rgb[0] + (rgb[1] * 256) + (rgb[2] * 256 * 256)
    return colorInt

ws.Cells(row,col).Font.Color = rgbToInt((255,255,128))

Setting a cell's fill RGB color with pywin32 in excel?

2 Answers2

Linked