#21581B (or 0x21581B) is unknown color: approx Myrtle. HEX triplet: 21, 58 and 1B. RGB value is (33,88,27). Sum of RGB (Red+Green+Blue) = 33+88+27=148 (19% of max value = 765). Red value is 33 (13.28% from 255 or 22.30% from 148); Green value is 88 (34.77% from 255 or 59.46% from 148); Blue value is 27 (10.94% from 255 or 18.24% from 148); Max value from RGB is 88 - color contains mainly: green. Hex color #21581B is not a web safe color. Web safe color analog (approx): #336633. Inversed color of #21581B is #DEA7E4. Grayscale: #404040. Windows color (decimal): -14591973 or 1792033. OLE color: 1792033.
HSL color Cylindrical-coordinate representation of color #21581B: hue angle of 114.1º degrees, saturation: 0.53, lightness: 0.23%. HSV value (or HSB Brightness) of color is 0.35% and HSV saturation: 0.69%. Process color model (Four color, CMYK) of #21581B is Cyan = 0.62, Magento = 0, Yellow = 0.69 and Black (K on CMYK) = 0.65.
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