#688B21 (or 0x688B21) is unknown color: approx Olive Drab. HEX triplet: 68, 8B and 21. RGB value is (104,139,33). Sum of RGB (Red+Green+Blue) = 104+139+33=276 (36% of max value = 765). Red value is 104 (41.02% from 255 or 37.68% from 276); Green value is 139 (54.69% from 255 or 50.36% from 276); Blue value is 33 (13.28% from 255 or 11.96% from 276); Max value from RGB is 139 - color contains mainly: green. Hex color #688B21 is not a web safe color. Web safe color analog (approx): #669933. Inversed color of #688B21 is #9774DE. Grayscale: #747474. Windows color (decimal): -9925855 or 2198376. OLE color: 2198376.
HSL color Cylindrical-coordinate representation of color #688B21: hue angle of 79.81º degrees, saturation: 0.62, lightness: 0.34%. HSV value (or HSB Brightness) of color is 0.55% and HSV saturation: 0.76%. Process color model (Four color, CMYK) of #688B21 is Cyan = 0.25, Magento = 0, Yellow = 0.76 and Black (K on CMYK) = 0.45.
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