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@isGabe
isGabe / SassMeister-input-HTML.html
Last active January 7, 2019 15:48
Sass function to check contrast ratio & conditionally change text color
<button>Submit</button>
@rxaviers
rxaviers / gist:7360908
Last active November 17, 2024 19:33
Complete list of github markdown emoji markup

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@voxpelli
voxpelli / SASS_Color_Contrast.md
Last active August 21, 2022 11:49
Pure SASS script for calculating contrast ratios of colors. MOVED TO: https://github.com/voxpelli/sass-color-helpers

Pure SASS-adaption of Lea Verou's contrast-ratio javascript. Can be useful when eg. generating colored buttons from a single supplied color as you can then check which out of a couple of text colors would give the best contrast.

This script currently lacks the support for alpha-transparency that Lea supports in her script though.

In addition to the color-contrast adaption there's also some math methods that were needed to be able to calculate the exponent of a number and especially so when the exponent is a decimal number. A 2.4 exponent is used to calculate the luminance of a color and calculating such a thing is not something that SASS supports out of the box and not something I found a good pure-SASS script for calculating and I much prefer pure-SASS over ruby extensions. The math methods might perhaps be unecessary though if you're running Compass or similar as they may provide compatible math methods themselves.

Normal usage: `color: pick_best_color(#f00

@jfsiii
jfsiii / relativeLuminanceW3C.js
Last active May 13, 2024 08:23
Calculate the relative luminance, or brightness, of a color. Accepts values 0-255 for R, G, B.
// from http://www.w3.org/TR/WCAG20/#relativeluminancedef
function relativeLuminanceW3C(R8bit, G8bit, B8bit) {
var RsRGB = R8bit/255;
var GsRGB = G8bit/255;
var BsRGB = B8bit/255;
var R = (RsRGB <= 0.03928) ? RsRGB/12.92 : Math.pow((RsRGB+0.055)/1.055, 2.4);
var G = (GsRGB <= 0.03928) ? GsRGB/12.92 : Math.pow((GsRGB+0.055)/1.055, 2.4);
var B = (BsRGB <= 0.03928) ? BsRGB/12.92 : Math.pow((BsRGB+0.055)/1.055, 2.4);
<!-- For Mixin and usage see: http://chipcullen.com/useful-sass-mixin-prop-query/ -->
<snippet>
<content><![CDATA[
@include prop-query($1, $2, $3);
$4
]]></content>
<tabTrigger>pq</tabTrigger>
<scope>source.css, source.scss, source.sass</scope>
</snippet>
@mshafrir
mshafrir / states_hash.json
Created May 9, 2012 17:05
US states in JSON form
{
"AL": "Alabama",
"AK": "Alaska",
"AS": "American Samoa",
"AZ": "Arizona",
"AR": "Arkansas",
"CA": "California",
"CO": "Colorado",
"CT": "Connecticut",
"DE": "Delaware",