Learn Vexillology & Flag Design
Vexillology—from the Latin vexillum (a Roman cavalry standard)—is the scholarly study of the history, geometry, symbolism, and usage of flags. Use this reference guide to understand the structural vocabulary used across every FastFlags profile.
1. Anatomy and parts of a flag
| Term | Definition | Example on FastFlags |
|---|---|---|
| Hoist | The half or edge of the flag closest to the flagpole, used to raise ('hoist') the banner. | Blue is at the hoist on France; green is at the hoist on Ireland. |
| Fly | The outer edge or half of the flag farthest from the flagpole, which flutters freely in the wind. | Orange is at the fly on Ireland, but at the hoist on Côte d'Ivoire. |
| Canton (Union) | The upper-hoist quarter of a flag, which remains visible even when a flag hangs against the mast in calm air. | The 50-star blue union of the United States. |
| Field (Ground) | The background color or surface of the flag behind any emblems. | The bottle-green field of Bangladesh or white field of Japan. |
| Charge | Any emblem, cross, star, disc, or coat of arms placed on the field. | The couped white cross of Switzerland. |
| Fimbriation | A narrow border (usually white or yellow) separating two dark color areas so they do not blur together at a distance. | The white border separating the blue cross from the red field on Norway and the United Kingdom. |
2. Statutory aspect ratios explained
National flags are not all the same shape. Governments define flag proportions as the ratio of vertical hoist height to horizontal fly width:
- 1:1 (Square): Used by Switzerland (and Vatican City) on land, evolving from medieval square infantry banners.
- 4:5 (Compact rectangle): Used by Monaco, distinguishing its official state proportions from Indonesia's 2:3 flag.
- 28:37 & 8:11 (Nordic proportions): Used by Denmark (28:37) and Norway (8:11 / 16:22) so that the two upper and lower hoist cantons form exact squares.
- 2:3 (Continental standard): The most common proportion worldwide, used by France, Italy, Japan, Netherlands, Romania, and Chad.
- 5:8 & 3:5 (Intermediate wide): Used by Poland (5:8), Sweden (5:8), Palau (5:8), Bangladesh (3:5), and Luxembourg (3:5).
- 10:19 & 1:2 (Elongated maritime proportions): Used by the United States (10:19), United Kingdom (1:2), and Ireland (1:2).
3. Official color specification systems (avoiding false precision)
Many reference sites list arbitrary RGB or hex codes as if they were written into a country's constitution. In reality, national flag statutes use several distinct color systems:
- Pantone (PMS / Textile): Used in modern decrees by Luxembourg (Pantone 299 C sky blue), Italy (Pantone Textile TCX), Ireland, and Switzerland.
- Munsell & NCS: Used by Japan (Munsell values for dyed bunting under the 1999 Act) and Sweden (Natural Color System, Ordinance 1983:826).
- CIE Colorimetric Coordinates: Used by Poland (1980 Act Attachment No. 2) and the Netherlands (NEN 3055).
- Textile Cable Numbers: Used by the United States (Standard Color Reference of America cable numbers 70180, 70001, and 70075).
- Statute-Named Tinctures: Constitutions that name colors in plain words (such as France's Article 2 or Côte d'Ivoire's Article 48) without a mandatory numerical color space.