Paste a HEX, RGB, HSL or even a colour name and get every format back, one click to copy. Plus whether black or white text reads better on it.
Black text reads best on this · 4.9:1
CMYK here is a simple formula, fine for picking colours. For real print jobs, ask your printer for their colour profile.
QUESTIONS NOBODY ASKED · ANSWERED ANYWAY
Split the 6 digits into three pairs and read each as a base-16 number. #FF6447 is FF = 255, 64 = 100, 47 = 71, so rgb(255, 100, 71).
Anything CSS understands: #f64, #ff6447, rgb(255 100 71), hsl(9, 100%, 64%) or names like tomato.
The WCAG contrast ratio between the colour and the suggested text colour. 4.5:1 or more is readable body text, 3:1 is fine for big headings.