JSFiddle DEMO
We'll do it using just CSS pseudo selectors!
This technique will work with dynamically generated content and different font sizes and widths.
HTML:
<div class='split-color'>Two is better than one.</div>
CSS:
.split-color > span {
white-space: pre-line;
position: relative;
color: #409FBF;
}
.split-color > span:before {
content: attr(data-content);
pointer-events: none; /* Prevents events from targeting pseudo-element */
position: absolute;
overflow: hidden;
color: #264A73;
width: 50%;
z-index: 1;
}
To wrap the dynamically generated string, you could use a function like this:
// Wrap each letter in a span tag and return an HTML string
// that can be used to replace the original text
function wrapString(str) {
var output = [];
str.split('').forEach(function(letter) {
var wrapper = document.createElement('span');
wrapper.dataset.content = wrapper.innerHTML = letter;
output.push(wrapper.outerHTML);
});
return output.join('');
}
// Replace the original text with the split-color text
window.onload = function() {
var el = document.querySelector('.split-color'),
txt = el.innerHTML;
el.innerHTML = wrapString(txt);
}