diff --git a/seed/challenges/01-front-end-development-certification/html5-and-css.json b/seed/challenges/01-front-end-development-certification/html5-and-css.json
index 3bb1e0f89d..bc43f0741a 100644
--- a/seed/challenges/01-front-end-development-certification/html5-and-css.json
+++ b/seed/challenges/01-front-end-development-certification/html5-and-css.json
@@ -3296,8 +3296,8 @@
       "title": "Use Hex Code for Specific Colors",
       "description": [
         "Did you know there are other ways to represent colors in CSS? One of these ways is called hexadecimal code, or <code>hex code</code> for short.",
-        "The word <code>Hexadecimal</code> can be broken down into the words <code>hexa</code> and <code>decimal</code>. You may be familiar with <code>decimal</code> being a number like 0.10 or 0.333. In CSS, <code>decimal</code> can be thought of as the numbers zero through nine, giving a total of ten numbers. The word <code>hexa</code>, as you might guess, means six. In CSS, this refers to the letters A, B, C, D, E, and F. Putting these together, each place value of a <code>hexadecimal</code> can be a number 0 to 9 or A through F, giving us a total of 16 possible values. You can find more information about hexadecimal numbers <a href=\"https://en.wikipedia.org/wiki/Hexadecimal\">here</a>.",
-        "With CSS, we use 6 hexadecimal numbers to represent colors. For example, <code>#000000</code> is the lowest possible value, and it represents the color black.",
+        "We usually use <code>decimals</code>, or base 10 numbers, which use the symbols 0 to 9 for each digit. <code>Hexadecimals</code> (or <code>hex</code>) are base 16 numbers. This means it uses sixteen distinct symbols. Like decimals, the symbols 0-9 represents values zero to nine. Then A,B,C,D,E,F represent values ten to fifteen. Altogether, 0 to F can represent a digit in <code>hexadecimal</code>, giving us 16 total possible values. You can find more information about <a target='_blank' href='https://en.wikipedia.org/wiki/Hexadecimal'>hexadecimal numbers here</a>.",
+        "In CSS, we can use 6 hexadecimal digits to represent colors, two each for the red (R), green (G), and blue (B) components. For example, <code>#000000</code> is black and is also the lowest possible value. You can find more information about the <a target='_blank' href='https://en.wikipedia.org/wiki/RGB_color_model'>RGB color system here</a>.",
         "Replace the word <code>black</code> in our <code>body</code> element's background-color with its <code>hex code</code> representation, <code>#000000</code>."
       ],
       "challengeSeed": [