period

1. 32c Clara Ward stamp — United States Postal Service, 1998
2. 39c Ella Fitzgerald stamp — United States Postal Service, 2007
3. 39c Judy Garland stamp — United States Postal Service, 2006
4. 29c Muddy Waters stamp — United States Postal Service, 1994
5. 29c Sacagawea stamp — United States Postal Service, 1994

movement

vibe

1. A blue cow — Marc Chagall, 1967
2. 39c Judy Garland stamp — United States Postal Service, 2006
3. 29c Muddy Waters stamp — United States Postal Service, 1994
4. 29c Bessie Smith stamp — United States Postal Service, 1994
5. 29c Sacagawea stamp — United States Postal Service, 1994

topics

1. 32c Clara Ward stamp — United States Postal Service, 1998

keywords

tone

1. The Rialto — John Singer Sargent, 1911
2. A blue cow — Marc Chagall, 1967
3. 39c Judy Garland stamp — United States Postal Service, 2006
4. 29c Sacagawea stamp — United States Postal Service, 1994

main color

1. 32c Clara Ward stamp — United States Postal Service, 1998
2. Untitled (Blue Divided by Blue) — Mark Rothko, 1966
3. 29c Bessie Smith stamp — United States Postal Service, 1994
4. 42c Ella Baker and Ruby Hurley stamp — United States Postal Service, 2009
5. 42c Medgar Evers and Fannie Lou Hamer stamp — United States Postal Service, 2009
6. 29c Sacagawea stamp — United States Postal Service, 1994
7. 39c Ella Fitzgerald stamp — United States Postal Service, 2007
8. 29c Muddy Waters stamp — United States Postal Service, 1994
9. 32c Madam C.J. Walker stamp — United States Postal Service, 1998
10. A blue cow — Marc Chagall, 1967
11. 33c Patricia Roberts Harris stamp — United States Postal Service, 2000
12. Blues Festival — harry walker
13. Popular Print for the Exhibition at the Museum of Modern Art, Bogotá — álvaro barrios, 1977
14. Blue Gentians — John Singer Sargent, 1905
15. 44c Anna Julia Cooper stamp — United States Postal Service, 2009
16. Six Landscapes (Blue) (right section) — donald urquhart, 2009
17. 39c Judy Garland stamp — United States Postal Service, 2006
18. Prints from Private Collections — lloyd mcneill, 1969
19. Popular Print (Grabado popular) — álvaro barrios, 1975

other

1. 25c Ida B. Wells stamp — United States Postal Service, 1990
2. Untitled print sleeve with woodblock print — Chiura Obata, 1930
3. Black Tent — John Singer Sargent, 1906
4. 37c 1955 Montgomery Bus Boycott stamp — United States Postal Service, 2005