DigitalColor Meter is a utility for measuring and displaying the colour values of pixels displayed on the screen of a Macintosh computer.

The utility presents a "window" onto the screen which includes a cursor

Cursor (computers)

In computing, a cursor is an indicator used to show the position on a computer monitor or other display device that will respond to input from a text input or pointing device. The flashing text cursor may be referred to as a caret in some cases...

 which by default is 1 × 1 pixel in size. The colour displayed in that pixel is shown as a colour value which may be represented as decimal or hexadecimal RGB

RGB color model

The RGB color model is an additive color model in which red, green, and blue light is added together in various ways to reproduce a broad array of colors...

 triplets, CIE 1931

CIE 1931 color space

In the study of color perception, one of the first mathematically defined color spaces is the CIE 1931 XYZ color space, created by the International Commission on Illumination in 1931....

, CIE 1976 or CIELAB

Lab color space

A Lab color space is a color-opponent space with dimension L for lightness and a and b for the color-opponent dimensions, based on nonlinearly compressed CIE XYZ color space coordinates....

 triplets or a Tristimulus triplet.

Prior to Mac OS X version 10.7, the displayed colour could be copied either as a solid colour or as the colour value which represents it, to be used in other applications (for instance an RGB triplet may be used in a colour specification to be used on a World Wide Web

World Wide Web

The World Wide Web is a system of interlinked hypertext documents accessed via the Internet...

page).