Flag of Czech Republic

Country

Flag of Czech Republic uses horizontal bicolour with a blue hoist triangle. Ratio 2:3, current adoption March 30, 1920 and design credited to Jaroslav Kursa.

Hoist Ratio 2:3 Fly

Flag Reference

Flag	Flag of Czech Republic
Entity Type	Country
Identifier	CZ / CZE
Region	Central Europe

Flag Specifications

Current Adoption	March 30, 1920
First Documented Use	1920
Proportion	2:3
Shape	Rectangle
Colours	White, Red, Blue
Designer	Jaroslav Kursa
Construction	Horizontal bicolour with a blue hoist triangle

Documented Colour Values

Colour	HEX	RGB	CMYK
White	#FFFFFF	255, 255, 255	0, 0, 0, 0
Red	#D7141A	215, 20, 26	0, 91, 88, 16
Blue	#11457E	17, 69, 126	87, 45, 0, 51

Design and Symbolism

White	Bohemia.
Red	Bohemia.
Blue	Moravia and Slovakia.
Blue wedge	Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia.

Proportions

Ratio	2:3
Hoist	2 units
Fly	3 units

About the Flag of Czech Republic

Horizontal bicolour with a blue hoist triangle The recorded proportion is 2:3. Within this library it is grouped with horizontal bicolour with a hoist triangle designs.

Colours and construction

The reference palette stored for Czech Republic is White (#FFFFFF), Red (#D7141A) and Blue (#11457E). The colour table above is intended for digital reference; where an issuing authority publishes a different colour standard, that specification takes precedence.

Symbols and recorded meaning

Blue wedge: Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia.

History and adoption record

The design record traces first use to 1920. The adoption field for the present record is March 30, 1920. The designer is recorded as Jaroslav Kursa.

Additional flag context

The blue triangle was added to a plain white-over-red bicolour in 1920 to distinguish the Czechoslovak flag from Poland's.

After Czechoslovakia split in 1993, the Czech Republic retained the former federal flag even though the dissolution agreement had addressed continued use of common state symbols.

The triangle reaches exactly to the centre of the flag, so the design cannot be reproduced correctly by eye without measuring.

How to identify this flag

For quick identification, look for Horizontal bicolour with a blue hoist triangle, a 2:3 proportion and the visible blue wedge. Use the comparison and design-family links on this page when another flag has a similar palette or layout.

Verification sources

Flags of the World — Czech Republic — Specialist vexillological reference

Other horizontal bicolour with a hoist triangle flags

See all

Facts about the Flag of Czech Republic

Czech Republic is recorded as horizontal bicolour with a blue hoist triangle.
The reference proportion for the flag of Czech Republic is 2:3.
The stored palette for Czech Republic contains White, Red and Blue.
The adoption field for this country flag record is March 30, 1920.
The design record traces first use to 1920.
Jaroslav Kursa is credited in the dataset as the designer of the flag.
Its construction is grouped with the horizontal bicolour with a hoist triangle design family in this library.
Blue wedge: Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia.
The blue triangle was added to a plain white-over-red bicolour in 1920 to distinguish the Czechoslovak flag from Poland's.
After Czechoslovakia split in 1993, the Czech Republic retained the former federal flag even though the dissolution agreement had addressed continued use of common state symbols.

Frequently Asked Questions about the Flag of Czech Republic

What does the flag of Czech Republic look like?

Horizontal bicolour with a blue hoist triangle, with a recorded proportion of 2:3.

What proportion is recorded for the flag of Czech Republic?

The reference proportion stored for this flag is 2:3.

Which colours are recorded for the flag of Czech Republic?

The reference palette lists White #FFFFFF, Red #D7141A and Blue #11457E.

What do the symbols on the flag of Czech Republic represent?

Blue wedge — Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia.

When was the present flag record for Czech Republic adopted?

The adoption field in this record is March 30, 1920.

Who designed the flag of Czech Republic?

The designer is recorded as Jaroslav Kursa.

Which design family does the flag of Czech Republic belong to?

WorldFlags.online groups it with horizontal bicolour with a hoist triangle designs for visual browsing; that classification describes construction, not necessarily historical ancestry.