CSS Worksheet: Hex and RGB Colours

HTML and CSS lesson 15: Colours: hex and rgb · Set 342 · 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 is rgb(0, 0, 255)? (a) red (b) cyan (c) blue (d) yellow
2. 2.🌈 Which colour is #ffffff? (a) yellow (b) red (c) white (d) black
3. 3.🌈 How many pairs of hex digits are in a colour like #ff8800? (a) 2 (b) 4 (c) 6 (d) 3
4. 4.🌈 In #rrggbb, which colour do the last two digits give? (a) green (b) red (c) white (d) blue
5. 5.🌈 Which colour is #ffff00? (a) bright green (b) black (c) yellow (d) blue
6. 6.🌈 Which colour is rgb(255, 0, 0)? (a) bright green (b) red (c) blue (d) magenta
7. 7.🌈 Which colour of light is strongest in rgb(111, 231, 74)? (a) green (b) red (c) blue
8. 8.🌈 Which colour of light is strongest in rgb(224, 2, 84)? (a) red (b) blue (c) green
9. 9.🌈 Which hex code is red? (a) #ffffff (b) #00ffff (c) #ff0000 (d) #00ff00
10. 10.🌈 Which hex code is black? (a) #00ff00 (b) #ffffff (c) #0000ff (d) #000000
11. 11.🌈 Which colour is rgb(255, 0, 255)? (a) cyan (b) white (c) bright green (d) magenta
12. 12.🌈 Hex digits go 0 to 9, then A to which letter? (a) F (b) J (c) Z (d) G
13. 13.🌈 Which colour of light is strongest in rgb(72, 78, 173)? (a) green (b) red (c) blue
14. 14.🌈 Which colour is rgb(0, 255, 0)? (a) bright green (b) blue (c) cyan (d) red
15. 15.🌈 Which colour is rgb(0, 255, 255)? (a) red (b) white (c) bright green (d) cyan
16. 16.🌈 In #rrggbb, which colour do the first two digits give? (a) red (b) black (c) blue (d) green
17. 17.🌈 Which colour is #ff00ff? (a) white (b) red (c) magenta (d) cyan
18. 18.🌈 Which hex code is yellow? (a) #00ffff (b) #ffffff (c) #0000ff (d) #ffff00
19. 19.🌈 Which colour of light is strongest in rgb(34, 110, 178)? (a) blue (b) red (c) green
20. 20.🌈 Which colour is #00ffff? (a) yellow (b) cyan (c) white (d) red
21. 21.🌈 Which colour of light is strongest in rgb(112, 186, 120)? (a) green (b) blue (c) red
22. 22.🌈 Which colour of light is strongest in rgb(93, 156, 21)? (a) green (b) blue (c) red
23. 23.🌈 Which colour of light is strongest in rgb(13, 3, 184)? (a) green (b) blue (c) red
24. 24.🌈 Which colour is rgb(255, 255, 0)? (a) white (b) black (c) yellow (d) blue
25. 25.🌈 Which colour of light is strongest in rgb(209, 84, 58)? (a) blue (b) green (c) red
26. 26.🌈 Which colour of light is strongest in rgb(208, 96, 39)? (a) green (b) blue (c) red
27. 27.🌈 Which colour of light is strongest in rgb(4, 209, 3)? (a) green (b) red (c) blue
28. 28.🌈 In #890000 the red part is the hex number 89. What is it as a normal number?
29. 29.🌈 Which colour is rgb(255, 255, 255)? (a) magenta (b) white (c) bright green (d) black
30. 30.🌈 Which colour of light is strongest in rgb(133, 57, 229)? (a) green (b) blue (c) red
31. 31.🌈 In #00ad00 the green part is the hex number ad. What is it as a normal number?
32. 32.🌈 Which hex code is white? (a) #00ffff (b) #000000 (c) #ff0000 (d) #ffffff
33. 33.🌈 In #00003d the blue part is the hex number 3d. What is it as a normal number?
34. 34.🌈 Which colour is rgb(0, 0, 0)? (a) black (b) white (c) bright green (d) yellow
35. 35.🌈 Which hex code is blue? (a) #0000ff (b) #ffffff (c) #ff0000 (d) #000000
36. 36.🌈 Which colour is #0000ff? (a) blue (b) red (c) magenta (d) cyan
37. 37.🌈 Which colour of light is strongest in rgb(41, 205, 36)? (a) green (b) red (c) blue
38. 38.🌈 Which colour is #00ff00? (a) white (b) bright green (c) yellow (d) blue
39. 39.🌈 Which colour of light is strongest in rgb(45, 183, 95)? (a) red (b) green (c) blue
40. 40.🌈 In #00b500 the green part is the hex number b5. What is it as a normal number?

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