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frontend/node_modules/antd/es/tooltip/util.js

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+import classNames from 'classnames';
+import { isPresetColor } from '../_util/colors';
+import { generateColor } from '../color-picker/util';
+export function parseColor(prefixCls, color) {
+  const isInternalColor = isPresetColor(color);
+  const className = classNames({
+    [`${prefixCls}-${color}`]: color && isInternalColor
+  });
+  const overlayStyle = {};
+  const arrowStyle = {};
+  const rgb = generateColor(color).toRgb();
+  const luminance = (0.299 * rgb.r + 0.587 * rgb.g + 0.114 * rgb.b) / 255;
+  const textColor = luminance < 0.5 ? '#FFF' : '#000';
+  if (color && !isInternalColor) {
+    overlayStyle.background = color;
+    overlayStyle['--ant-tooltip-color'] = textColor;
+    // @ts-ignore
+    arrowStyle['--antd-arrow-background-color'] = color;
+  }
+  return {
+    className,
+    overlayStyle,
+    arrowStyle
+  };
+}