Background color hex codes for each key letter

To generate a markdown table with the key letter and background color hex code from the provided image, I'll need to visually inspect and estimate the colors for each section. Since I can't interact with the image as a color picker, the hex codes will be approximate representations of the colors I see.

Here is the markdown table with the approximate background color hex codes for each key letter:

Color Wheel Hex Codes

Key Letter	Approximate Background Color Hex Code
1A	#25D5E0 (Light Cyan/Teal)
1B	#15C6D1 (Cyan/Teal)
2A	#4ED94E (Bright Green)
2B	#38CB3A (Green)
3A	#6DCF38 (Lime Green)
3B	#55C31D (Strong Green)
4A	#E0DD39 (Yellow-Green)
4B	#D8D321 (Vivid Yellow-Green)
5A	#E2A941 (Deep Yellow/Orange)
5B	#DB9C2A (Burnt Orange)
6A	#E17565 (Light Coral/Salmon)
6B	#DE6055 (Coral/Salmon)
7A	#DD5590 (Fuschia/Deep Pink)
7B	#D63F7F (Vivid Pink)
8A	#C857BE (Lavender/Light Violet)
8B	#BD44B2 (Deep Lavender/Violet)
9A	#9E67D1 (Light Indigo/Purple)
9B	#8E52C6 (Indigo/Purple)
10A	#6692E1 (Light Blue)
10B	#5081D9 (Medium Blue)
11A	#4DBAE3 (Sky Blue)
11B	#34ACC7 (Cyan Blue)
12A	#38D4E5 (Bright Cyan)
12B	#20C9D1 (Strong Cyan)

---

Note: The exact hex codes would require a digital color analysis tool, but the codes provided above represent the apparent colors of the wedges in the image.

Here is a MATLAB function that takes a key letter (like '1A', '5B', etc.) as input and returns the approximate color hex code based on the colors observed in the image.

function hexCode = getColorHex(keyLetter)
% GETCOLORHEX Returns the approximate color hex code for a key letter from a color wheel.
%
%   HEXCODE = GETCOLORHEX(KEYLETTER) takes a string KEYLETTER
%   (e.g., '1A', '5B') and returns the corresponding approximate
%   background color hex code as a string.
%
%   Input:
%       keyLetter - A string representing the key letter (e.g., '1A', '12B').
%
%   Output:
%       hexCode   - A string containing the 6-digit hex color code (e.g., '#25D5E0').
%                   Returns '#FFFFFF' (White) if the key letter is not found.

    % Define the color map using a switch statement
    switch upper(keyLetter)
        % Ring A (Inner Ring - generally lighter/softer tones)
        case '1A'
            hexCode = '#25D5E0'; % Light Cyan/Teal
        case '2A'
            hexCode = '#4ED94E'; % Bright Green
        case '3A'
            hexCode = '#6DCF38'; % Lime Green
        case '4A'
            hexCode = '#E0DD39'; % Yellow-Green
        case '5A'
            hexCode = '#E2A941'; % Deep Yellow/Orange
        case '6A'
            hexCode = '#E17565'; % Light Coral/Salmon
        case '7A'
            hexCode = '#DD5590'; % Fuschia/Deep Pink
        case '8A'
            hexCode = '#C857BE'; % Lavender/Light Violet
        case '9A'
            hexCode = '#9E67D1'; % Light Indigo/Purple
        case '10A'
            hexCode = '#6692E1'; % Light Blue
        case '11A'
            hexCode = '#4DBAE3'; % Sky Blue
        case '12A'
            hexCode = '#38D4E5'; % Bright Cyan

        % Ring B (Outer Ring - generally stronger/deeper tones)
        case '1B'
            hexCode = '#15C6D1'; % Cyan/Teal
        case '2B'
            hexCode = '#38CB3A'; % Green
        case '3B'
            hexCode = '#55C31D'; % Strong Green
        case '4B'
            hexCode = '#D8D321'; % Vivid Yellow-Green
        case '5B'
            hexCode = '#DB9C2A'; % Burnt Orange
        case '6B'
            hexCode = '#DE6055'; % Coral/Salmon
        case '7B'
            hexCode = '#D63F7F'; % Vivid Pink
        case '8B'
            hexCode = '#BD44B2'; % Deep Lavender/Violet
        case '9B'
            hexCode = '#8E52C6'; % Indigo/Purple
        case '10B'
            hexCode = '#5081D9'; % Medium Blue
        case '11B'
            hexCode = '#34ACC7'; % Cyan Blue
        case '12B'
            hexCode = '#20C9D1'; % Strong Cyan

        % Default case for invalid input
        otherwise
            warning('getColorHex:InvalidKey', 'Key letter "%s" not found in the color map. Returning White.', keyLetter);
            hexCode = '#FFFFFF';
    end
end

How to Use the Function

1. Save: Save the code above in a file named getColorHex.m in a directory accessible to MATLAB.

2. Run: Call the function from the MATLAB Command Window:

   % Example 1: Get the hex code for 5B
   color = getColorHex('5B')
   % color will be: '#DB9C2A'
   
   % Example 2: Input is not case-sensitive (due to upper(keyLetter))
   color2 = getColorHex('3a')
   % color2 will be: '#6DCF38'
   
   % Example 3: Invalid input
   color3 = getColorHex('XX')
   % color3 will be: '#FFFFFF' (and a warning will be displayed)

Key Letter Approximate Background Color Hex Code
1A #25D5E0 (Light Cyan/Teal)
1B #15C6D1 (Cyan/Teal)
2A #4ED94E (Bright Green)
2B #38CB3A (Green)
3A #6DCF38 (Lime Green)
3B #55C31D (Strong Green)
4A #E0DD39 (Yellow-Green)
4B #D8D321 (Vivid Yellow-Green)
5A #E2A941 (Deep Yellow/Orange)
5B #DB9C2A (Burnt Orange)
6A #E17565 (Light Coral/Salmon)
6B #DE6055 (Coral/Salmon)
7A #DD5590 (Fuschia/Deep Pink)
7B #D63F7F (Vivid Pink)
8A #C857BE (Lavender/Light Violet)
8B #BD44B2 (Deep Lavender/Violet)
9A #9E67D1 (Light Indigo/Purple)
9B #8E52C6 (Indigo/Purple)
10A #6692E1 (Light Blue)
10B #5081D9 (Medium Blue)
11A #4DBAE3 (Sky Blue)
11B #34ACC7 (Cyan Blue)
12A #38D4E5 (Bright Cyan)
12B #20C9D1 (Strong Cyan)