#556F81 (or 0x556F81) is unknown color: approx Wedgewood. HEX triplet: 55, 6F and 81. RGB value is (85,111,129). Sum of RGB (Red+Green+Blue) = 85+111+129=325 (43% of max value = 765). Red value is 85 (33.59% from 255 or 26.15% from 325); Green value is 111 (43.75% from 255 or 34.15% from 325); Blue value is 129 (50.78% from 255 or 39.69% from 325); Max value from RGB is 129 - color contains mainly: blue. Hex color #556F81 is not a web safe color. Web safe color analog (approx): #666699. Inversed color of #556F81 is #AA907E. Grayscale: #696969. Windows color (decimal): -11178111 or 8482645. OLE color: 8482645.
HSL color Cylindrical-coordinate representation of color #556F81: hue angle of 204.55º degrees, saturation: 0.21, lightness: 0.42%. HSV value (or HSB Brightness) of color is 0.51% and HSV saturation: 0.34%. Process color model (Four color, CMYK) of #556F81 is Cyan = 0.34, Magento = 0.14, Yellow = 0 and Black (K on CMYK) = 0.49.
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