Flag of Czech Republic
countryThe flag of Czech Republic was adopted on March 30, 1920 to a design by Jaroslav Kursa. Horizontal bicolour with a blue hoist triangle. It uses 3 colours: white, red and blue. The official proportions are 2:3.
Hoist
Ratio 2:3
Fly
Basic Flag Information
| Flag Name | Flag of Czech Republic |
|---|---|
| Country | Czech Republic |
| Official Country Name | Czech Republic |
| Capital | Prague |
| Continent | Europe |
| Region | Central Europe |
| ISO Country Code | CZ / CZE |
| Internet Domain | .cz |
| Calling Code | +420 |
| Currency | Czech koruna (CZK) |
| National Language(s) | Czech, Slovak |
| Demonym | Czech |
| Area | 78,865 km² |
| Population | 11 million (2025 est.) |
Flag Specifications
| Official Flag Name | Flag of Czech Republic |
|---|---|
| Adopted On | March 30, 1920 |
| First Used | 1920 |
| Current Version Adopted | March 30, 1920 |
| Flag Proportion | 2:3 |
| Flag Shape | Rectangle |
| Number of Colors | 3 |
| Main Colors | White, Red, Blue |
| Designer | Jaroslav Kursa |
| Design Type | Horizontal bicolour with a blue hoist triangle |
| Official Status | Official National Flag |
| Government Authority | Government of Czech Republic |
Flag Color Information
| Color | Appearance | HEX Code | 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 |
Flag Design and Symbols
| White colour | Represents Bohemia |
|---|---|
| Red colour | Represents Bohemia |
| Blue colour | Represents Moravia and Slovakia |
| Blue wedge | Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia |
Flag History
| Year / Period | Event |
|---|---|
| 1920 | The design was first used |
| 1920-03-30 | The current flag was officially adopted |
| Present | The flag remains in official use |
| Present | The flag remains in official use |
Flag Dimensions and Construction
| Official Ratio | 2:3 |
|---|---|
| Width | 2 units (hoist) |
| Length | 3 units (fly) |
Czech Republic Flag Usage
| Government Buildings | Yes |
|---|---|
| Schools | Yes |
| Civil Use | Yes |
| Official Ceremonies | Yes |
| Sports Events | Yes |
| National Holidays | Yes |
| Military | Yes |
| Naval Use | Yes |
| Embassies | Yes |
| International Events | Yes |
Other Official Flags of Czech Republic
| Flag Type | Use | Link |
|---|---|---|
| National Flag | National representation | View flag |
| Civil Flag | Used by civilians | View flag |
| State Flag | Used by government | View flag |
| War Flag | Used during military operations | View flag |
| Naval Ensign | Used by the navy | View flag |
| Air Force Flag | Used by the air force | View flag |
| Presidential Standard | Used by the head of state | View flag |
| Royal Standard | Used by the monarch | View flag |
| Historical Flag | Previous national flag | View flag |
Quick Facts About the Flag
| Flag Age | 106 years old as of 2026 |
|---|---|
| Adoption Date | March 30, 1920 |
| Oldest Version | 1920 |
| Designer | Jaroslav Kursa |
| Most Common Color | White |
| Similar Flags | Djibouti, Philippines, Sint Maarten |
| Unique Feature | Horizontal bicolour with a blue hoist triangle |
Other horizontal bicolour with a hoist triangle flags
See all
Facts about the Flag of Czech Republic
- The blue triangle was added to a plain white-over-red bicolour in 1920 to distinguish the Czechoslovak flag from Poland's.
- When Czechoslovakia dissolved in 1993 both successor states agreed not to use the old symbols, but the Czech Republic kept the flag anyway.
- The triangle reaches exactly to the centre of the flag, so the design cannot be reproduced correctly by eye without measuring.
- The flag of Czech Republic was officially adopted on March 30, 1920. It was designed by Jaroslav Kursa.
- The flag in its present form is 106 years old as of 2026.
- Design type: Horizontal bicolour with a blue hoist triangle.
- The official proportions are 2:3. It shares that ratio with 82 national flags.
- The flag uses 3 colours: white, red and blue.
- The white on the flag stands for Bohemia.
- The red on the flag stands for Bohemia.
- The blue on the flag stands for Moravia and Slovakia.
- Blue wedge: Added to distinguish the flag from Poland’s — it originally stood for Slovakia within Czechoslovakia.
- The design belongs to the "Horizontal bicolour with a hoist triangle" family, shared with 3 other flags in this reference.
- Flags most often confused with it: Djibouti, Philippines and Sint Maarten.
- Czech Republic became independent on 1 January 1993 from Czechoslovakia.
- Czechoslovakia was founded on 28 October 1918 and split peacefully into the Czech Republic and Slovakia in 1993.
- Ice hockey is the national sport; football is the most played.
- The national animal is the double-tailed lion, which appears on the coat of arms.
Frequently Asked Questions about the Flag of Czech Republic
When was the flag of Czech Republic adopted?
The flag of Czech Republic was officially adopted on March 30, 1920.
What do the colours of the flag of Czech Republic mean?
White for Bohemia, red for Bohemia and blue for Moravia and Slovakia.
When did Czech Republic gain independence?
Czech Republic became independent on 1 January 1993 from Czechoslovakia. Czechoslovakia was founded on 28 October 1918 and split peacefully into the Czech Republic and Slovakia in 1993.
What is the national sport of Czech Republic?
Ice hockey is the national sport; football is the most played.
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.
Who designed the flag of Czech Republic?
The flag was designed by Jaroslav Kursa.
What are the proportions of the flag of Czech Republic?
The official ratio is 2:3, which makes the flag rectangular. It shares those proportions with 82 national flags.
What is the national anthem of Czech Republic?
The national anthem is "Kde domov můj".
When is the national day of Czech Republic?
It falls on 28 October, Independent Czechoslovak State Day, and the flag is flown across the country.
What is the national animal of Czech Republic?
The national animal is the double-tailed lion, which appears on the coat of arms.