Greek Small Letter Lamda HTML entity λ

λ is the HTML entity for Greek Small Letter Lamda λ (U+03BB). Copy λ, λ and the CSS, JavaScript, Python and URL escapes.

Entity: λ
Code point: U+03BB
Unicode name: GREEK SMALL LETTER LAMDA
Block: Greek and Coptic
Category: Lowercase letter (Ll)
Since: Unicode 1.1
Defined in: HTML 4.01 and HTML5

Codes to copy

HTML named	`λ`Works in HTML; in XML only & < > " ' are predefined.
HTML decimal	`λ`Works in HTML and XML.
HTML hex	`λ`Works in HTML and XML.
CSS	`content: "\3BB";`In a stylesheet, for ::before and ::after.
JavaScript	`"\u03BB"`Also valid in JSON.
Python	`"\u03bb"`Python 3 string literal.
Python by name	`"\N{GREEK SMALL LETTER LAMDA}"`Readable alternative using the Unicode name.
URL	`%CE%BB`Percent-encoded UTF-8 bytes, for a path or query value.
UTF-8 bytes	`CE BB`2 bytes.
UTF-16	`03BB`1 code unit, which is what JavaScript length counts.

When to use it

λ writes U+03BB (Greek Small Letter Lamda), a small letter from the Unicode Greek and Coptic block, encoded since Unicode 1.1. In mathematics, single Greek letters are usually set in italic; MathML or a maths font handles that automatically.

The name dates from HTML 4, so it works in every browser and in old email clients.

More greek letters

All greek letters · Every HTML entity · Encode or decode text

Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).