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You can use scriptable options for this:
const options = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 20, 23, 50, 60, 65],
backgroundColor: (ctx) => {
if (ctx.raw <= 20) {
return 'red';
}
if (ctx.raw <= 60) {
return 'yellow';
}
return 'green';
}
}]
},
options: {}
}
const ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.6.2/chart.js"></script>
</body>
Source:stackexchange.com