CSS Worksheet: Hex and RGB Colours

HTML and CSS lesson 15: Colours: hex and rgb · Set 204 · 40 questions

Code tip (Red, green, blue): rgb(red, green, blue): each from 0 to 255. #rrggbb: the same three numbers in hex. Hex digits: 0–9, then a = 10, b = 11, c = 12, d = 13, e = 14, f = 15. A pair = 16 × first digit + second digit: ff = 16 × 15 + 15 = 255.

1. 1.🌈 Which colour of light is strongest in rgb(115, 49, 254)? (a) green (b) red (c) blue
2. 2.🌈 Which hex code is red? (a) #00ff00 (b) #000000 (c) #ff0000 (d) #ffffff
3. 3.🌈 In #00002c the blue part is the hex number 2c. What is it as a normal number?
4. 4.🌈 Which colour of light is strongest in rgb(53, 154, 59)? (a) blue (b) red (c) green
5. 5.🌈 Which hex code is yellow? (a) #ffff00 (b) #ff00ff (c) #00ffff (d) #ffffff
6. 6.🌈 Which colour is #0000ff? (a) blue (b) red (c) bright green (d) magenta
7. 7.🌈 Hex digits go 0 to 9, then A to which letter? (a) G (b) J (c) F (d) Z
8. 8.🌈 Which hex code is bright green? (a) #00ff00 (b) #00ffff (c) #0000ff (d) #ffffff
9. 9.🌈 Which colour of light is strongest in rgb(56, 235, 21)? (a) green (b) red (c) blue
10. 10.🌈 In #0000fe the blue part is the hex number fe. What is it as a normal number?
11. 11.🌈 Which colour is #ff0000? (a) blue (b) bright green (c) magenta (d) red
12. 12.🌈 Which colour is rgb(0, 0, 255)? (a) blue (b) cyan (c) bright green (d) white
13. 13.🌈 Which colour of light is strongest in rgb(70, 187, 82)? (a) blue (b) green (c) red
14. 14.🌈 How many pairs of hex digits are in a colour like #ff8800? (a) 3 (b) 6 (c) 2 (d) 4
15. 15.🌈 Which hex code is white? (a) #00ff00 (b) #000000 (c) #ffffff (d) #ff00ff
16. 16.🌈 In #c50000 the red part is the hex number c5. What is it as a normal number?
17. 17.🌈 In #0000b0 the blue part is the hex number b0. What is it as a normal number?
18. 18.🌈 Which colour is #ffffff? (a) blue (b) bright green (c) white (d) yellow
19. 19.🌈 In #001c00 the green part is the hex number 1c. What is it as a normal number?
20. 20.🌈 In #000066 the blue part is the hex number 66. What is it as a normal number?
21. 21.🌈 Which colour of light is strongest in rgb(153, 43, 96)? (a) blue (b) green (c) red
22. 22.🌈 Which hex code is magenta? (a) #00ff00 (b) #ff00ff (c) #ffff00 (d) #0000ff
23. 23.🌈 Which colour is #ffff00? (a) blue (b) yellow (c) red (d) bright green
24. 24.🌈 Which colour of light is strongest in rgb(24, 180, 75)? (a) blue (b) red (c) green
25. 25.🌈 Which colour is rgb(255, 0, 0)? (a) bright green (b) blue (c) red (d) white
26. 26.🌈 In #rrggbb, which colour do the first two digits give? (a) blue (b) green (c) black (d) red
27. 27.🌈 Which colour of light is strongest in rgb(86, 30, 229)? (a) blue (b) green (c) red
28. 28.🌈 Which colour is rgb(255, 255, 0)? (a) yellow (b) cyan (c) blue (d) bright green
29. 29.🌈 Which colour is rgb(255, 0, 255)? (a) white (b) blue (c) red (d) magenta
30. 30.🌈 Which colour of light is strongest in rgb(122, 203, 137)? (a) green (b) blue (c) red
31. 31.🌈 Which colour of light is strongest in rgb(84, 13, 171)? (a) red (b) green (c) blue
32. 32.🌈 Which colour is rgb(0, 255, 255)? (a) bright green (b) magenta (c) cyan (d) white
33. 33.🌈 In #00a000 the green part is the hex number a0. What is it as a normal number?
34. 34.🌈 Which colour is rgb(0, 255, 0)? (a) red (b) yellow (c) bright green (d) cyan
35. 35.🌈 Which colour of light is strongest in rgb(24, 163, 85)? (a) red (b) blue (c) green
36. 36.🌈 In #2d0000 the red part is the hex number 2d. What is it as a normal number?
37. 37.🌈 Which colour is rgb(255, 255, 255)? (a) magenta (b) black (c) white (d) bright green
38. 38.🌈 In #00000a the blue part is the hex number 0a. What is it as a normal number?
39. 39.🌈 In #005600 the green part is the hex number 56. What is it as a normal number?
40. 40.🌈 In #120000 the red part is the hex number 12. What is it as a normal number?

Free html and css lessons, practice and worksheets at talentjr.in/html-css-for-kids