#21ADE9 Hex Color
Online color picker to view shades, tints, color codes, and complementary colors

#21ade9 is a hex color. It can be described as cold, cool, blue and blueish. It is a shade of blue. The hex code is #21ade9.
Questions about #21ade9
What is #21ade9 in RGB, HSL and CMYK?
In RGB, #21ade9 is rgb(33, 173, 233), in HSL hsl(198, 82%, 52%) and in CMYK 86%, 26%, 0%, 9%.
Is #21ade9 readable on white or black?
#21ade9 has a 2.55:1 contrast ratio on white and 8.21:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it is too faint for text and on black it works for body text. Try other pairs in the contrast checker.