NEMA ANSI Z535.1-2022 PDF

Full title and description

American National Standard for Safety Colors — ANSI Z535.1-2022. Sets forth the technical definitions, standardized safety color names, chromaticity regions, color tolerances and color formulas used for safety signs, labels, tags and related safety markings.

Abstract

ANSI Z535.1-2022 (Safety Colors) defines a uniform system for specifying safety colors in terms of Munsell notation, CIE colorimetric data and chromaticity regions, and provides color formulas and tolerances for the ANSI safety-color palette used throughout the Z535 series. The 2022 revision clarifies definitions, updates fluorescent color information, and aligns selected color specifications with U.S. federal labeling requirements.

General information

• Status: Active / Current
• Publication date: August 2, 2022
• Publisher: National Electrical Manufacturers Association (developed/published); American National Standards Institute (ANSI) approved
• ICS / categories: ICS 01.070 (Colour coding); ICS 29.020 (Electrical engineering in general)
• Edition / version: 2022 (ANSI Z535.1-2022)
• Number of pages: 43

Key bibliographic and status information above is reported by the standards developer and ANSI distribution listings.

Scope

Provides specifications for safety colors used to communicate hazards and safety-related information. The standard gives technical definitions, chromaticity regions and tolerances, Munsell notations, CIE coordinates, and recommended color formulas for a set of ANSI safety colors (e.g., Safety Red, Safety Orange, Safety Yellow, Safety Blue, Safety Green, Safety White, Safety Black, and selected fluorescent colors). It harmonizes where practicable with ISO safety-color conventions and with U.S. federal labeling (49 CFR) while noting limits (it does not prescribe measurement procedures or substrate color behavior in detail).

Key topics and requirements

• Definitions and standardized names for ANSI safety colors (Safety Red, Safety Orange, Safety Yellow, Safety Green, Safety Blue, Safety White, Safety Black, etc.).
• Color specification methods: Munsell notations, CIE chromaticity coordinates and defined chromaticity regions for each safety color.
• Permitted color tolerances and guidelines to ensure consistent hazard recognition across media and applications.
• Color formulas and cross-reference tables (including PANTONE and other color system references) for production and specification.
• Updated treatment of fluorescent safety colors and removal of certain legacy colors from the hazard-alerting set.
• Guidance on harmonization with ISO safety color guidance and with U.S. regulatory color requirements (e.g., 49 CFR Table harmonization).

Typical use and users

Used by safety engineers, product designers, sign and label manufacturers, ink/pigment suppliers, regulatory compliance specialists, technical writers, and facility managers to specify and produce consistent, recognizable safety markings for industrial, commercial, transportation and product applications.

Related standards

Part of the ANSI Z535 suite of safety standards; closely related to ANSI Z535.2 (Environmental/Facility Signs), ANSI Z535.3 (Criteria for Safety Symbols), ANSI Z535.4 (Product Safety Signs and Labels), ANSI Z535.5 (Safety Tags and Barricade Tapes) and ANSI Z535.6 (Product Safety Information). It also aligns conceptually with ISO safety-sign/color standards such as ISO 3864 and ISO 7010 and with relevant U.S. regulations (e.g., 49 CFR 172.407 for transport labeling).

Keywords

Safety colors, ANSI Z535.1-2022, safety signage, chromaticity, Munsell, CIE coordinates, color tolerances, fluorescent safety colors, Z535 series, color formulas

FAQ

Q: What is this standard?

A: ANSI Z535.1-2022 is the American National Standard that establishes the defined set of safety colors, their technical descriptions, chromaticity regions and tolerances used for hazard communication and safety signage.

Q: What does it cover?

A: It covers the specification of safety colors in multiple color systems (Munsell, CIE, and commercial color references), acceptable tolerances, color formulas and guidance to achieve consistent hazard-alerting color use across signs, labels, tags and related media.

Q: Who typically uses it?

A: Manufacturers of signs, labels and safety products; ink and pigment formulators; safety and compliance professionals; product designers and technical authors; and facility safety managers.

Q: Is it current or superseded?

A: Current. ANSI Z535.1-2022 is the active edition published in 2022 and it revises and supersedes the prior 2017 edition (ANSI Z535.1-2017).

Q: Is it part of a series?

A: Yes. It is the color-definition part of the ANSI Z535 family of safety standards; other parts address sign design, symbols, product labeling and temporary hazard tags.

Q: What are the key keywords?

A: Safety colors, chromaticity, Munsell, CIE, color tolerances, Z535, safety signs, hazard communication.