#51C455 Hex Color
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Not a muted sage or deep forest, #51c455 is a vivid, beaming green that grabs attention fast. That intensity suits calls to action, eco branding, and finance accents, though as a full background it can overwhelm. Black text reads clearly on it at roughly 9.4:1 contrast, well past AA. Tone it down by mixing gray, or ground it with navy.
Questions about #51c455
What is #51c455 in RGB, HSL and CMYK?
In RGB, #51c455 is rgb(81, 196, 85), in HSL hsl(122, 49%, 54%) and in CMYK 59%, 0%, 57%, 23%.
What colors pair well with #51c455?
Does #51c455 read warm or cool?
It leans warm for a green, thanks to a faint yellow undertone at its mid lightness. In practice it reads energetic and bold rather than calm or cool.
Is #51c455 readable on white or black?
#51c455 has a 2.23:1 contrast ratio on white and 9.37:1 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.