CSS Worksheet: Hex and RGB Colours

HTML and CSS lesson 15: Colours: hex and rgb · Set 353 · 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(255, 0, 0)? (a) red (b) bright green (c) blue (d) white
2. 2.🌈 Which hex code is yellow? (a) #ff0000 (b) #00ff00 (c) #ffff00 (d) #ff00ff
3. 3.🌈 Hex digits go 0 to 9, then A to which letter? (a) Z (b) J (c) F (d) G
4. 4.🌈 Which colour is rgb(0, 0, 255)? (a) red (b) yellow (c) magenta (d) blue
5. 5.🌈 In #rrggbb, which colour do the first two digits give? (a) blue (b) black (c) red (d) green
6. 6.🌈 Which colour is #ff0000? (a) red (b) cyan (c) magenta (d) black
7. 7.🌈 Which colour is rgb(255, 255, 255)? (a) bright green (b) cyan (c) red (d) white
8. 8.🌈 In #000097 the blue part is the hex number 97. What is it as a normal number?
9. 9.🌈 In #006100 the green part is the hex number 61. What is it as a normal number?
10. 10.🌈 In #rrggbb, which colour do the last two digits give? (a) white (b) red (c) blue (d) green
11. 11.🌈 Which colour of light is strongest in rgb(216, 116, 35)? (a) blue (b) green (c) red
12. 12.🌈 Which hex code is cyan? (a) #00ffff (b) #ffffff (c) #ffff00 (d) #0000ff
13. 13.🌈 Which colour of light is strongest in rgb(3, 230, 73)? (a) blue (b) red (c) green
14. 14.🌈 Which hex code is bright green? (a) #00ff00 (b) #ffff00 (c) #000000 (d) #0000ff
15. 15.🌈 Which hex code is blue? (a) #ffff00 (b) #ff00ff (c) #0000ff (d) #ffffff
16. 16.🌈 Which colour is #0000ff? (a) yellow (b) white (c) blue (d) magenta
17. 17.🌈 Which colour of light is strongest in rgb(69, 55, 248)? (a) red (b) blue (c) green
18. 18.🌈 In #006600 the green part is the hex number 66. What is it as a normal number?
19. 19.🌈 In #000031 the blue part is the hex number 31. What is it as a normal number?
20. 20.🌈 Which colour of light is strongest in rgb(15, 139, 187)? (a) green (b) red (c) blue
21. 21.🌈 How many pairs of hex digits are in a colour like #ff8800? (a) 2 (b) 3 (c) 4 (d) 6
22. 22.🌈 Which colour is #ffffff? (a) yellow (b) white (c) black (d) bright green
23. 23.🌈 Which hex code is red? (a) #000000 (b) #ffff00 (c) #ff0000 (d) #ffffff
24. 24.🌈 Which colour of light is strongest in rgb(18, 221, 7)? (a) red (b) blue (c) green
25. 25.🌈 Which colour is rgb(0, 255, 0)? (a) bright green (b) white (c) blue (d) yellow
26. 26.🌈 Which colour of light is strongest in rgb(176, 17, 112)? (a) red (b) green (c) blue
27. 27.🌈 In #006c00 the green part is the hex number 6c. What is it as a normal number?
28. 28.🌈 Which colour is rgb(255, 0, 255)? (a) magenta (b) red (c) bright green (d) black
29. 29.🌈 In #00a100 the green part is the hex number a1. What is it as a normal number?
30. 30.🌈 Which colour is #ffff00? (a) red (b) bright green (c) yellow (d) white
31. 31.🌈 In #002a00 the green part is the hex number 2a. What is it as a normal number?
32. 32.🌈 What is the biggest number one colour can have in rgb()? (a) 99 (b) 100 (c) 1000 (d) 255
33. 33.🌈 In #7e0000 the red part is the hex number 7e. What is it as a normal number?
34. 34.🌈 In #003400 the green part is the hex number 34. What is it as a normal number?
35. 35.🌈 Which colour of light is strongest in rgb(56, 173, 16)? (a) green (b) blue (c) red
36. 36.🌈 Which colour is #00ffff? (a) bright green (b) yellow (c) magenta (d) cyan
37. 37.🌈 In #0000c4 the blue part is the hex number c4. What is it as a normal number?
38. 38.🌈 Which colour is rgb(255, 255, 0)? (a) yellow (b) bright green (c) magenta (d) black
39. 39.🌈 Which colour is #00ff00? (a) bright green (b) magenta (c) cyan (d) white
40. 40.🌈 Which hex code is magenta? (a) #00ff00 (b) #ff0000 (c) #ff00ff (d) #ffff00

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