---
title: Primaries index
framework: quicktime-file-format
role: symbol
role_heading: Data field
path: quicktime-file-format/color_parameter_atom/primaries_index
---

# Primaries index

A 16-bit unsigned integer containing an index into a table specifying the CIE 1931 xy chromaticity coordinates of the white point and the red, green, and blue primaries.

## Overview

Overview The table of primaries specifies the white point and the red, green, and blue primary color points for a video system.

## See Also

### Data fields

- [Size](quicktime-file-format/color_parameter_atom/size.md)
- [Type](quicktime-file-format/color_parameter_atom/type.md)
- [Color parameter type](quicktime-file-format/color_parameter_atom/color_parameter_type.md)
- [Transfer function index](quicktime-file-format/color_parameter_atom/transfer_function_index.md)
- [Matrix index](quicktime-file-format/color_parameter_atom/matrix_index.md)