• 2024
• Spectral Imaging Experts' Day
• Upcoming ICC Meetings

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• 2023
• London Meeting Invited Speaker session

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• 2022
• HDR Experts' Day

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• 2020
• ICC DevCon 2020
• Munich, 10-11 February

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• 2019
• ICC Color Experts' Day, Bressanone

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• 2018
• ICC Color Symposium Hong Kong, 22 October
• Grand Rapids, MI, 30-31 May
• ICC DevCon 2018
• Munich, 25-26 February

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• 2017
• Ryerson Toronto Graphic Arts Day, 13 October
• Toronto, 11-12 October
• Prague Graphic Arts Experts' Day, 29 June
• Prague, 27-28 June
• Tokyo, 19-20 April

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• Profile security

• iccMAX Demo Implementation - v2.1.3 released

• New version of ICC.2 (iccMAX) published

• Dr Danny Rich

• New version of ICC.1 (v4.4) published

• Tech note on partial adaptation

• Interoperability Conformance Specifications approved

• ICC DevCon2020 - recordings available!

• ICC working group on HDR

• Android lock screen bug

• iccMAX published as ISO 20677

• iccMAX

• New study on color management

• ICC tech note on embedding an iccMAX profile in a v4 profile

• ICC White Paper on iccMAX Calc programming

• ICC video

• ICC Medical Imaging Working Group

• Display calibration

• PRMG-based exchange profile for digital print

• Profiling tools

• ICC Profile Registry

• sRGB profiles

• ICC user forum

• Why join ICC?

• What is an ICC Profile?

• Using CxF for printing spot inks

• What is FOGRA39?

• Consistent colour appearance

• Colour management resources in Chinese

• Colour gamut analysis

• iccMAX: a new colour management paradigm (video)

BT.601

Reference Name: ITU-R BT.601

Definition: ITU-R BT.709-6: Studio encoding parameters of digital television for standard 4:3 and wide-screen 16:9 aspect ratios.

Responsible Organization: International Telecommunication Union

Contact Information:
ICC Technical Secretary
email: [email protected]

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DOCUMENTATION

Documentation source ITU Recommendation BT.601-7 (03/2011)

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ENCODING CHARACTERISTICS

Color space

Type: Colorimetric RGB color space

RGB primaries:

525-line				625-line
	x	y	z		x	y	z
R	0.63	0.34	0.03		0.64	0.33	0.03
G	0.31	0.595	0.095		0.29	0.60	0.11
B	0.155	0.07	0.775		0.15	0.06	0.79

Color component transfer function: 2.4 gamma

White point luminance: 100 cd/m²

White point chromaticity: x = 0.3127, y = 0.3290 (D65)

Encoding Range: linear RGB: 0.0 to 1.0

Bit depth: 8

Image state: Output-referred (CRT)

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PROFILES

Profiles for the Rec. 601 Display are available:
BT601_525-line.icc
BT601_625-line.icc

Note that 525-line and 625-line encodings were previously designated NTSC and PAL respectively in ITU-R BT.1700.

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HINTS FOR PROFILE MAKERS

See Transforming via the ICC PCS for details on the derivation and use of D50 adapted data, chromatic adaptation matrix and measurement corrections.