关于本计算器
Convert colors between HEX, RGB and HSL with live preview, random generator and WCAG contrast against black and white.
HEX/RGB/HSL 颜色转换器
HEX、RGB 与 HSL 互转，实时预览。
预览
#42A5F5
rgb(66, 165, 245)
hsl(207, 90%, 61%)
RGB
R
G
B
HSL
207° · 90% · 61%RGB
66 · 165 · 245HEX
#42A5F5黑白对比度
Aa 2.65:1Aa 7.93:1AAA on white
常见问题
HEX vs RGB?
HEX is the compact web notation of RGB triplets, e.g. #FF0000 is pure red.
What is HSL?
Hue (0–360°), saturation and lightness — an intuitive way to pick shades of one color.
What is the contrast ratio?
WCAG compares text/background luminance; 4.5:1 or higher is readable for body text.