#210917 (or 0x210917) is unknown color: approx Blackberry. HEX triplet: 21, 09 and 17. RGB value is (33,9,23). Sum of RGB (Red+Green+Blue) = 33+9+23=65 (8% of max value = 765). Red value is 33 (13.28% from 255 or 50.77% from 65); Green value is 9 (3.91% from 255 or 13.85% from 65); Blue value is 23 (9.38% from 255 or 35.38% from 65); Max value from RGB is 33 - color contains mainly: red. Hex color #210917 is not a web safe color. Web safe color analog (approx): #330000. Inversed color of #210917 is #DEF6E8. Grayscale: #111111. Windows color (decimal): -14612201 or 1509665. OLE color: 1509665.
HSL color Cylindrical-coordinate representation of color #210917: hue angle of 325º degrees, saturation: 0.57, lightness: 0.08%. HSV value (or HSB Brightness) of color is 0.13% and HSV saturation: 0.73%. Process color model (Four color, CMYK) of #210917 is Cyan = 0, Magento = 0.73, Yellow = 0.30 and Black (K on CMYK) = 0.87.
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<style> span { border-color: #210917; } span { border-color: rgb(33,9,23); } td.TdClassName { border-color: #210917; } .TagClassName { border-color: #210917; } </style>