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pythondatasetsactive-learningtext-annotationdatasetnatural-language-processingdata-labelingmachine-learningannotation-tool
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16 lines
511 B
16 lines
511 B
import Vue from 'vue'
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declare module 'vue/types/vue' {
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interface Vue {
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$contrastColor(hexString: string): string
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}
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}
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Vue.prototype.$contrastColor = (hexString: string) => {
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// W3c offers a formula for calculating ideal color:
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// https://www.w3.org/TR/AERT/#color-contrast
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const r = parseInt(hexString.substr(1, 2), 16)
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const g = parseInt(hexString.substr(3, 2), 16)
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const b = parseInt(hexString.substr(5, 2), 16)
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return (r * 299 + g * 587 + b * 114) / 1000 < 128 ? '#ffffff' : '#000000'
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}
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