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/r/dotnet

@r-dotnet.at.shendrick.net

TooManyDataAnnotations — .NET validation attributes for IPv4/IPv6, SemVer, MAC, HexColor, GUID v7, and more https://old.reddit.com/r/dotnet/comments/1vvu3jn/toomanydataannotations_net_validation_attributes/

#dotnet

August 26, 2026 at 7:24 AM

/r/dotnet

@r-dotnet.at.shendrick.net

TooManyDataAnnotations — .NET validation attributes for IPv4/IPv6, SemVer, MAC, HexColor, GUID v7, and more https://old.reddit.com/r/dotnet/comments/1vvu3jn/toomanydataannotations_net_validation_attributes/

#dotnet

August 23, 2026 at 1:45 AM

sylvia

@svillegas.com

Hey, I made a fun little thing!

hexcolor-words.netlify.app

I still have bits to tweak, but it's mostly there. Please enjoy.

Hexcolor Words

An array of CSS color hex codes which spell words.

hexcolor-words.netlify.app

September 9, 2025 at 8:26 PM

𝐟𝐢𝐭𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐧𝐠

@ruleo.bsky.social

anyway here's a quick solution, copy the code from here pastebin.com/raw/f8DjX7LL

and you just change --nu-grey: #hexcolor; <-- mind the ; at the end, to what grey you want

paste in the code injection under settings > advanced

October 6, 2025 at 1:59 PM

Roelof Rietbroek 🌍 👀

@drstrawpants.wobbly.earth

For a proper laugh, can I make the suggestion to make the UK #bluepassport with hexcolor #003399?

<a href="http://publications.europa.eu/code/en/en-5000100.htm" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">http://publications.europa.eu/code/en/en-5000100.htm

Home - Interinstitutional Style Guide - Publications Office of the EU

publications.europa.eu

November 7, 2024 at 4:49 PM

Mr Anxiety

@mranxiety.bsky.social

I learned a ton writing this:
- Error handling.
- The importance of unit tests.
- Using regex in a new way I'd never tried before.

$function getComplementaryColor(hexColor) { if (hexColor.length < 6) { //Parsing numbers to the correct length hexColor = hexColor.padStart(6, '0'); } if (hexColor.length !== 6) { throw new Error('incorrect string length'); } if (!/^[0-9a-fA-F]{6}$/.test(hexColor)) { //Checking for non hex numbers individually. throw new Error('non-hex chars'); } const r = (255 - parseInt(hexColor.slice(0, 2), 16)).toString(16).padStart(2, '0'); const g = (255 - parseInt(hexColor.slice(2, 4), 16)).toString(16).padStart(2, '0'); const b = (255 - parseInt(hexColor.slice(4, 6), 16)).toString(16).padStart(2, '0'); return `#${r + g + b}`.toUpperCase(); } /* Write the function getComplementaryColor that: 1. Takes a string of hexColor, representing a color in hexadecimal format: - It can consist of numbers: 0 to 9, and letters: A to F. - It CANNOT contain the hash # symbol. 2. Returns the complementary color of the given hex color as a string: - It must contain uppercase characters only. - It must be preceded by the hash # symbol. If hexColor is less than 6 characters long, pad it with zeros at the start to make up for the missing characters. Just like so: 'bc9' => '000bc9' '' => '000000' In case hexColor exceeds the 6 character limit or contains non-hexadecimal characters or isn't a string, the function should throw an error. For example: getComplementaryColor('01fD08') === '#FE02F7' getComplementaryColor('') === '#FFFFFF' // '' becomes '000000' getComplementaryColor('a23') === '#FFF5DC' // 'a23' becomes '000a23' getComplementaryColor('40fdEd2') // throws an error (incorrect string length) getComplementaryColor('76ecLL') // throws an error (non-hex chars) getComplementaryColor(293942) // throws an error (non-string type) 💡 A complementary color is a color that, when added to the original color, results in white (#FFFFFF). */$

June 6, 2025 at 1:45 PM