Mix function for blending in SASS - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding the Mix Function Output

What color does the mix function produce when blending #ff0000 (red) and #0000ff (blue) with a weight of 50%?

SASS

$color1: #ff0000;
$color2: #0000ff;
$result: mix($color1, $color2, 50%);

A #ff007f (a pinkish red)

B #7f007f (a dark purple)

C #800080 (a purple color)

D #000080 (navy blue)

💡 Hint

Think about mixing equal parts of red and blue colors.

Mixing equal parts of red (#ff0000) and blue (#0000ff) results in a balanced purple (#7f007f). The mix function blends colors by weight, so 50% means equal parts.

📝 Syntax

intermediate

Correct Syntax for Mix Function

Which of the following is the correct syntax to mix 30% of #00ff00 (green) into #0000ff (blue) using Sass?

A mix(#0000ff, #00ff00, 30%)

B mix(#0000ff, #00ff00, weight: 30%)

C mix(#00ff00, #0000ff, 30%)

D mix(#00ff00, #0000ff, weight: 30%)

💡 Hint

Remember the first color is the one to mix into the second color.

The mix function syntax is mix(color1, color2, weight). The weight applies to the first color. So to mix 30% green into blue, green is first, blue second, weight 30%.

❓ rendering

advanced

Visual Result of Mix with Different Weights

What is the visible color result when mixing #ff0000 (red) into #0000ff (blue) with a weight of 80%?

SASS

$result: mix(#ff0000, #0000ff, 80%);

A #cc0033 (a strong reddish color)

B #3300cc (a strong bluish color)

C #990099 (a medium purple)

D #ff3300 (bright orange-red)

💡 Hint

Higher weight means more influence from the first color.

Weight 80% means 80% red and 20% blue, resulting in a strong reddish color (#cc0033).

❓ selector

advanced

Using Mix Function in CSS Selector Styling

Given the Sass code below, what background color will the .button class have?

SASS

.button {
  background-color: mix(#ffffff, #000000, 25%);
}

A #bfbfbf (a light gray)

B #404040 (a dark gray)

C #7f7f7f (a medium gray)

D #ffffff (white)

💡 Hint

25% weight means 25% white mixed into black.

Mixing 25% white into black results in a light gray (#bfbfbf), closer to white than black.

❓ accessibility

expert

Ensuring Color Contrast with Mix Function

You want to create a button background color by mixing #0000ff (blue) with #ffffff (white) to ensure good contrast with white text. Which mix weight will most likely provide sufficient contrast for accessibility?

A mix(#0000ff, #ffffff, 5%)

B mix(#0000ff, #ffffff, 10%)

C mix(#0000ff, #ffffff, 50%)

D mix(#0000ff, #ffffff, 90%)

💡 Hint

Higher weight means more blue, which is darker and better contrast with white text.

A higher weight of blue creates a darker background, providing good contrast with white text. mix(#0000ff, #ffffff, 90%) results in mostly blue (#0000ff) with 10% white, a dark blue with sufficient contrast.