Czechia’s flag has equal white and red horizontal bands with a blue triangular wedge extending from the hoist to the center of the flag.
Specification
The upper half is white and the lower half red. A blue wedge fills the hoist edge and reaches an apex halfway along the flag’s 2:3 length. Czech law names the state colors in the order white, red, and blue.
Display colors
HEX #11457E / display referenceHEX #D7141A / display referenceConstruction notes
Construct a 2:3 rectangle and divide it horizontally into equal halves. Draw the wedge from both hoist corners to the geometric center. When hung vertically, the white area appears at the viewer’s left, red at the right, and the blue wedge points downward from the top.
Historical record
The white-over-red bicolor drew on the colors of Bohemia. A blue wedge was added to the Czechoslovak flag in 1920, distinguishing it from similar bicolors and representing the wider state. Following the dissolution of Czechoslovakia, Czech Act No. 3/1993 retained the design as a symbol of the Czech Republic.
Source trail
Prague Castle: State Symbols of the Czech Republic ↗
Chamber of Deputies: Act No. 3/1993 on Czech state symbols ↗
Design history and Czech legal form
Czechia’s blue-wedge flag design dates to Czechoslovakia in 1920. The Czech Republic retained that design in 1993. The Czech Embassy’s historical account distinguishes these stages.
The record’s “Czech legal form: 1 January 1993” identifies the effective date of Act No. 3/1993, section 8, rather than the origin of the design.
What the displayed colors mean
The imported record labels blue #11457E and red #D7141A as screen display references. These digital approximations should not be treated as statutory color codes or manufacturing standards. Act No. 3/1993, sections 3–4, names white, red and blue; those color names are distinct from the specimen’s HEX values. This record supplies no Pantone, CMYK or textile equivalents.
| Feature | Meaning |
|---|---|
| Overall proportions | 2:3 means height:length: two units high for every three units long. |
| Horizontal bands | The upper white band and lower red band each occupy half the total height, with the blue triangle overlaid at the hoist. |
| Hoist | The attachment edge of the flag; the blue triangle’s base spans this edge. |
| Blue triangle depth | Half the total length, measured from the hoist toward the opposite edge. |
| Triangle tip | The flag’s geometric center: halfway along its length and halfway down its height. |