<script src="https://d3js.org/d3-color.v1.min.js"></script>
<script src="https://d3js.org/d3-hsv.v0.1.min.js"></script>
<script>

var yellow = d3.hsv("yellow"); // {h: 60, s: 1, v: 1, opacity: 1}

</script>

Try d3-hsv in your browser.

# d3.hsv(h, s, v[, opacity]) <>
# d3.hsv(specifier)
# d3.hsv(color)

Constructs a new HSV color. The channel values are exposed as h, s and v properties on the returned instance.

If h, s and v are specified, these represent the channel values of the returned color; an opacity may also be specified. If a CSS Color Module Level 3 specifier string is specified, it is parsed and then converted to the HSV color space. See d3.color for examples. If a color instance is specified, it is converted to the RGB color space using color.rgb and then converted to HSV.

# d3.interpolateHsv(a, b) <>

Returns an HSV color space interpolator between the two colors a and b. The colors a and b need not be in HSV; they will be converted to HSV using d3.hsv. If either color’s hue or chroma is NaN, the opposing color’s channel value is used. The shortest path between hues is used. The return value of the interpolator is an RGB string.

# d3.interpolateHsvLong(a, b) <>

Like interpolateHsv, but does not use the shortest path between hues.