CSS Worksheet: Hex and RGB Colours

HTML and CSS lesson 15: Colours: hex and rgb · Set 176 · 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.🌈 In #00009e the blue part is the hex number 9e. What is it as a normal number?
2. 2.🌈 Which hex code is blue? (a) #0000ff (b) #00ff00 (c) #ffffff (d) #00ffff
3. 3.🌈 Which hex code is white? (a) #00ff00 (b) #00ffff (c) #000000 (d) #ffffff
4. 4.🌈 Which colour is #ff00ff? (a) bright green (b) black (c) blue (d) magenta
5. 5.🌈 Which colour of light is strongest in rgb(96, 156, 102)? (a) red (b) green (c) blue
6. 6.🌈 Which colour of light is strongest in rgb(80, 118, 222)? (a) blue (b) green (c) red
7. 7.🌈 Which colour is rgb(255, 0, 0)? (a) cyan (b) black (c) red (d) bright green
8. 8.🌈 In #000008 the blue part is the hex number 08. What is it as a normal number?
9. 9.🌈 Which hex code is red? (a) #00ffff (b) #000000 (c) #ff0000 (d) #0000ff
10. 10.🌈 In #620000 the red part is the hex number 62. What is it as a normal number?
11. 11.🌈 Which colour is #00ff00? (a) red (b) yellow (c) bright green (d) blue
12. 12.🌈 Which hex code is magenta? (a) #000000 (b) #ffffff (c) #ff00ff (d) #ff0000
13. 13.🌈 Which colour is rgb(255, 0, 255)? (a) white (b) red (c) bright green (d) magenta
14. 14.🌈 In #080000 the red part is the hex number 08. What is it as a normal number?
15. 15.🌈 What is the biggest number one colour can have in rgb()? (a) 100 (b) 1000 (c) 99 (d) 255
16. 16.🌈 Which colour of light is strongest in rgb(97, 43, 233)? (a) red (b) green (c) blue
17. 17.🌈 Which hex code is black? (a) #0000ff (b) #00ff00 (c) #00ffff (d) #000000
18. 18.🌈 Which colour is rgb(255, 255, 0)? (a) white (b) magenta (c) yellow (d) black
19. 19.🌈 In #000067 the blue part is the hex number 67. What is it as a normal number?
20. 20.🌈 Which colour is #0000ff? (a) red (b) cyan (c) bright green (d) blue
21. 21.🌈 In #000019 the blue part is the hex number 19. What is it as a normal number?
22. 22.🌈 Which colour is #ffff00? (a) cyan (b) bright green (c) white (d) yellow
23. 23.🌈 Which colour of light is strongest in rgb(169, 27, 19)? (a) green (b) red (c) blue
24. 24.🌈 Which colour is #ff0000? (a) black (b) cyan (c) magenta (d) red
25. 25.🌈 Which colour of light is strongest in rgb(119, 249, 61)? (a) blue (b) red (c) green
26. 26.🌈 Which colour is #00ffff? (a) bright green (b) cyan (c) red (d) blue
27. 27.🌈 Which colour of light is strongest in rgb(246, 136, 108)? (a) green (b) red (c) blue
28. 28.🌈 In #rrggbb, which colour do the last two digits give? (a) green (b) white (c) red (d) blue
29. 29.🌈 In #rrggbb, which colour do the first two digits give? (a) blue (b) green (c) red (d) black
30. 30.🌈 Which colour of light is strongest in rgb(75, 167, 0)? (a) green (b) blue (c) red
31. 31.🌈 Which colour of light is strongest in rgb(85, 102, 214)? (a) blue (b) red (c) green
32. 32.🌈 Which colour of light is strongest in rgb(247, 4, 121)? (a) green (b) red (c) blue
33. 33.🌈 In #0000c0 the blue part is the hex number c0. What is it as a normal number?
34. 34.🌈 Which colour of light is strongest in rgb(167, 139, 96)? (a) blue (b) green (c) red
35. 35.🌈 Which colour of light is strongest in rgb(160, 77, 50)? (a) red (b) green (c) blue
36. 36.🌈 In #00eb00 the green part is the hex number eb. What is it as a normal number?
37. 37.🌈 In #009000 the green part is the hex number 90. What is it as a normal number?
38. 38.🌈 In #0000ea the blue part is the hex number ea. What is it as a normal number?
39. 39.🌈 Which hex code is yellow? (a) #ffffff (b) #00ff00 (c) #00ffff (d) #ffff00
40. 40.🌈 Which colour is rgb(0, 0, 0)? (a) blue (b) red (c) black (d) yellow

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