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Documentation Index

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Function Signature

export const buildRandomLabelColor = (): LabelColor

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Parameters

This function takes no parameters.

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Returns

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LabelColor
object
An object containing color values for different label visualization contexts

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Description

The buildRandomLabelColor function generates a cohesive color scheme for label visualization by creating four related color variants based on a random hue. All colors share the same hue (0-360 degrees) but vary in saturation, lightness, and opacity to provide different visual weights for different UI contexts. The function uses HSL (Hue, Saturation, Lightness) color space to ensure:
  • Visual consistency: All four colors are harmonious since they share the same hue
  • Accessibility: The solid color has sufficient contrast for text
  • Flexibility: Different variants for backgrounds, overlays, and primary display

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Example Usage

import { buildRandomLabelColor } from '@/features/labelwise/utils/color'

// Generate a random label color scheme
const labelColor = buildRandomLabelColor()

console.log(labelColor)
// Example output:
// {
//   solid: 'hsl(240 70% 40%)',           // Deep blue for label text/border
//   soft: 'hsl(240 95% 96%)',            // Very light blue for backgrounds
//   overlay: 'hsl(240 85% 45% / 0.14)',  // Subtle blue overlay
//   overlayStrong: 'hsl(240 85% 45% / 0.24)' // Stronger blue overlay
// }

// Apply colors to a label element
const labelElement = document.createElement('div')
labelElement.style.color = labelColor.solid
labelElement.style.backgroundColor = labelColor.soft
labelElement.style.border = `1px solid ${labelColor.solid}`

// Use overlay for hover effects
labelElement.addEventListener('mouseenter', () => {
  labelElement.style.backgroundColor = labelColor.overlayStrong
})

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Color Properties

PropertySaturationLightnessOpacityUse Case
solid70%40%100%Primary label color, text, borders
soft95%96%100%Background fills, subtle highlights
overlay85%45%14%Light hover states, secondary backgrounds
overlayStrong85%45%24%Stronger hover states, active selections

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Implementation Details

The function generates a random hue value between 0 and 360 degrees using Math.random(), then constructs four HSL color strings with predefined saturation, lightness, and opacity values optimized for label visualization in UI contexts.

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