body {
    background: #272822;
    margin: 0;
    padding: 0;
}
svg {
    background: white;
}
.label {
  text-anchor: middle;
  font-size: 24px;
}
rect {
  shape-rendering: crispEdges;
}
path {
  fill: none;
}
path.hue {
  stroke: white;
  stroke-width: 1;
}
path.chroma {
  stroke: #FF3D00;
  stroke-width: 1;
}
path.luminance {
  stroke: black;
  stroke-width: 0.6;
}

.axis .domain, .axis .tick line {
  stroke: black;
  shape-rendering: crispEdges;
}
.axis {
  font-size: 8px;
  font-family: sans-serif;
}