Adjust-hue for color rotation in SASS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to rotate the hue of the color by 90 degrees using adjust-hue.

SASS

$new-color: adjust-hue($base-color, [1]);

Drag options to blanks, or click blank then click option'

A90

Bhue(90)

Cdeg90

D90deg

Attempts:

3 left

💡 Hint

Common Mistakes

Adding 'deg' unit to the hue rotation value.

Using a string like 'hue(90)' instead of a number.

The adjust-hue function takes the hue rotation as a number in degrees without the unit. So 90 is correct.

2fill in blank

medium

Complete the code to rotate the hue of the color by -45 degrees using adjust-hue.

SASS

$rotated-color: adjust-hue($color, [1]);

Drag options to blanks, or click blank then click option'

A45

B-45deg

C-45

Ddeg-45

Attempts:

3 left

💡 Hint

Common Mistakes

Including 'deg' unit in the value.

Using a positive number instead of negative.

Use a negative number without units to rotate the hue backward by 45 degrees.

3fill in blank

hard

Fix the error in the code to correctly rotate the hue by 180 degrees.

SASS

$final-color: adjust-hue($input-color, [1]);

Drag options to blanks, or click blank then click option'

A180deg

Bhue(180)

Cdeg180

D180

Attempts:

3 left

💡 Hint

Common Mistakes

Using '180deg' instead of '180'.

Adding extra text like 'hue(180)'.

The adjust-hue function requires a number without units. So 180 is correct.

4fill in blank

hard

Fill both blanks to create a map of colors with hue rotated by 30 and 60 degrees.

SASS

$colors: ("light": adjust-hue($base, [1]), "dark": adjust-hue($base, [2]));

Drag options to blanks, or click blank then click option'

A30

B60

C30deg

D-60

Attempts:

3 left

💡 Hint

Common Mistakes

Using '30deg' or '60deg' instead of just numbers.

Using negative values where positive are needed.

Use numbers without units for both hue rotations: 30 and 60.

5fill in blank

hard

Fill all three blanks to create a map with hue rotated by 15, -15, and 45 degrees.

SASS

$palette: ("warm": adjust-hue($color, [1]), "cool": adjust-hue($color, [2]), "neutral": adjust-hue($color, [3]));

Drag options to blanks, or click blank then click option'

A15

B-15

C45

D15deg

Attempts:

3 left

💡 Hint

Common Mistakes

Including 'deg' units in the values.

Using positive instead of negative for the second blank.

Use numbers without units for all hue rotations: 15, -15, and 45.

Practice

1.

What does the adjust-hue function do in Sass?

easy

A. It adjusts the saturation of a color.

B. It changes the brightness of a color.

C. It rotates the hue of a color by a specified degree on the color wheel.

D. It converts a color to grayscale.

Solution

1. Step 1: Understand the purpose of adjust-hue

   The function changes the hue angle of a color, moving it around the color wheel.

2. Step 2: Compare with other color functions

   Brightness, grayscale, and saturation are different properties; adjust-hue specifically rotates hue.

3. Final Answer:

   It rotates the hue of a color by a specified degree on the color wheel. -> Option C

4. Quick Check:

   adjust-hue rotates hue = D [OK]

Hint: Remember: adjust-hue changes color angle, not brightness or saturation [OK]

Common Mistakes:

• Confusing hue rotation with brightness or saturation changes
• Thinking it converts colors to grayscale
• Assuming it changes color opacity

2.

Which of the following is the correct syntax to rotate the hue of #ff0000 by 90 degrees using adjust-hue in Sass?

?

easy

A. adjust-hue(#ff0000, 90deg)

B. adjust-hue(#ff0000, 90)

C. adjust-hue(#ff0000 90deg)

D. adjust-hue(#ff0000; 90deg)

Solution

1. Step 1: Check the function syntax

   adjust-hue takes two arguments separated by a comma: the color and the degree number (without unit).

2. Step 2: Identify correct argument format

   Degrees are passed as a number, not with deg unit in Sass.

3. Final Answer:

   adjust-hue(#ff0000, 90) -> Option B

4. Quick Check:

   Use number degrees without unit in adjust-hue = B [OK]

Hint: Use number only for degrees, no 'deg' unit in adjust-hue [OK]

Common Mistakes:

• Adding 'deg' unit to degree argument
• Missing comma between arguments
• Using semicolon instead of comma

3.

What color will be produced by this Sass code?

$color: #00ff00;
$new-color: adjust-hue($color, 120);

Choose the closest hex color output for $new-color.

medium

A. #ffff00

B. #ff0000

C. #00ffff

D. #0000ff

Solution

1. Step 1: Identify the original color hue

   #00ff00 is pure green, which is at 120° on the color wheel.

2. Step 2: Rotate hue by 120 degrees

   Adding 120° to green (120°) gives 240°, which is blue.

3. Step 3: Correct hue calculation

   Green is 120°, adding 120° gives 240°, which corresponds to blue (#0000ff).

4. Step 4: Re-examine options

   Since 120 + 120 = 240°, the color is blue (#0000ff), so #0000ff is correct.

5. Final Answer:

   #0000ff -> Option D

6. Quick Check:

   Green + 120° hue rotation = Blue = #0000ff [OK]

Hint: Add degrees to hue; green(120°) +120° = blue(240°) [OK]

Common Mistakes:

• Confusing hue degrees and resulting colors
• Not wrapping hue around 360 degrees
• Mixing RGB hex with hue values

4.

Identify the error in this Sass code snippet:

$base-color: #ff00ff;
$new-color: adjust-hue($base-color 60deg);

medium

A. Missing comma between arguments and incorrect degree unit.

B. Using an invalid color code.

C. adjust-hue cannot be used with variables.

D. The function requires three arguments.

Solution

1. Step 1: Check argument separation

   Arguments in adjust-hue must be separated by a comma; here, comma is missing.

2. Step 2: Check degree argument format

   Degrees should be passed as a number without deg unit in Sass.

3. Final Answer:

   Missing comma between arguments and incorrect degree unit. -> Option A

4. Quick Check:

   Comma and number-only degrees needed = C [OK]

Hint: Always separate args with comma and use number for degrees [OK]

Common Mistakes:

• Omitting comma between function arguments
• Adding 'deg' unit to degree argument
• Assuming adjust-hue needs three arguments

5.

You want to create a color palette by rotating the hue of #336699 by increments of 45 degrees four times. Which Sass code correctly generates the list of rotated colors?

?

hard

A. $base: #336699;
$palette: (
adjust-hue($base, 45),
adjust-hue($base, 90),
adjust-hue($base, 135),
adjust-hue($base, 180)
);

B. $base: #336699;
$palette: (
adjust-hue($base 45),
adjust-hue($base 90),
adjust-hue($base 135),
adjust-hue($base 180)
);

C. $base: #336699;
$palette: (
adjust-hue($base, 45deg),
adjust-hue($base, 90deg),
adjust-hue($base, 135deg),
adjust-hue($base, 180deg)
);

D. $base: #336699;
$palette: (
adjust-hue($base, 45),
adjust-hue($base, 90),
adjust-hue($base, 135),
adjust-hue($base, 225)
);

Solution

1. Step 1: Verify argument syntax for adjust-hue

   Degrees must be numbers without units and arguments separated by commas.

2. Step 2: Check the increments and values

   Rotations are 45, 90, 135, and 180 degrees, which are correct increments of 45.

3. Step 3: Compare options

   $base: #336699; $palette: ( adjust-hue($base, 45), adjust-hue($base, 90), adjust-hue($base, 135), adjust-hue($base, 180) ); uses correct syntax and increments. $base: #336699; $palette: ( adjust-hue($base 45), adjust-hue($base 90), adjust-hue($base 135), adjust-hue($base 180) ); misses commas. $base: #336699; $palette: ( adjust-hue($base, 45deg), adjust-hue($base, 90deg), adjust-hue($base, 135deg), adjust-hue($base, 180deg) ); uses invalid 'deg' units. $base: #336699; $palette: ( adjust-hue($base, 45), adjust-hue($base, 90), adjust-hue($base, 135), adjust-hue($base, 225) ); has wrong last increment (225 instead of 180).

4. Final Answer:

   code with correct syntax and increments -> Option A

5. Quick Check:

   Correct syntax + increments = A [OK]

Hint: Use commas and number degrees; check increments carefully [OK]

Common Mistakes:

• Using 'deg' units in degrees
• Missing commas between arguments
• Incorrect increment values in rotation