#645B77 (or 0x645B77) is unknown color: approx Smoky. HEX triplet: 64, 5B and 77. RGB value is (100,91,119). Sum of RGB (Red+Green+Blue) = 100+91+119=310 (41% of max value = 765). Red value is 100 (39.45% from 255 or 32.26% from 310); Green value is 91 (35.94% from 255 or 29.35% from 310); Blue value is 119 (46.88% from 255 or 38.39% from 310); Max value from RGB is 119 - color contains mainly: blue. Hex color #645B77 is not a web safe color. Web safe color analog (approx): #666666. Inversed color of #645B77 is #9BA488. Grayscale: #606060. Windows color (decimal): -10200201 or 7822180. OLE color: 7822180.
HSL color Cylindrical-coordinate representation of color #645B77: hue angle of 259.29º degrees, saturation: 0.13, lightness: 0.41%. HSV value (or HSB Brightness) of color is 0.47% and HSV saturation: 0.24%. Process color model (Four color, CMYK) of #645B77 is Cyan = 0.16, Magento = 0.24, Yellow = 0 and Black (K on CMYK) = 0.53.
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