2016-03-31 14:17:09 +08:00
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---
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2016-09-26 11:08:27 +08:00
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category:
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zh-CN: 设计基础
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en-US: Design Fundamental
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2016-03-31 14:17:09 +08:00
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order: 2
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2016-09-21 11:28:38 +08:00
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title:
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zh-CN: 色彩
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en-US: Colors
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2016-03-31 14:17:09 +08:00
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---
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2015-08-05 17:35:52 +08:00
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2017-01-12 21:51:40 +08:00
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设计中对色彩的运用不仅应考虑品牌的识别性,还需达到信息传递、操作指引、交互反馈,或是强化和凸显某一个元素的目的。基于操作系统更注重高效、清晰等特点,Ant Design 的用色上更偏向简洁实用一些。在选择色彩时有以下三个注意点:
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- 色彩应与产品定位相匹配,且符合用户心理认知;
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- 视觉层次应清晰分明,为重要行动点或关键信息定义一个主色,并建立视觉连续性;
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- 遵守 WCAG 2.0 的 标准,保证足够的对比度,让色彩更容易被视障碍(色盲)用户识别。
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2015-08-05 17:35:52 +08:00
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2016-03-14 16:18:06 +08:00
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## Ant Design Colors
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2015-08-05 17:35:52 +08:00
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2017-01-12 21:51:40 +08:00
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Ant Design PC 端的色板由 10 个由浅至深的色彩单元格组成,我们为部分色彩格定义了默认使用场景,用户在进行色彩配色时只需根据关键词选择一条色板即可得到一套完整的系统配色方案。在理论上,在 UI 设计中的色彩都应取自这份色板。
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经过设计师和程序员的精心调教,结合了色彩加白、加黑、加深,贝塞尔曲线,以及针对冷暖色的不同旋转角度,得出一套[色板生成算法](https://github.com/ant-design/ant-design/blob/734beb84ffc3f0469fbae1566aa8450f966cb261/components/style/color/colorPalette.less)。使用者只需指定主色,便可导出一条完整的渐变色板。
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Ant Design 的色板由 8 种基本色彩组成,每种基本色(第 6 格)又按上述算法衍生出 10 种渐变色。
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> 注:在由浅至深的色板里,第 6 格色彩单元格普遍满足 [WCAG 2.0](http://leaverou.github.io/contrast-ratio/) 的 4.5:1 最小对比度(AA 级),我们将其定义为色板的默认品牌色。
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2017-01-01 22:20:06 +08:00
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2015-08-05 17:35:52 +08:00
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2016-03-03 17:23:08 +08:00
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`````__react
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2017-01-04 15:13:55 +08:00
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const rgbToHex = (rgbString) => {
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const hexChars = '0123456789ABCDEF';
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const rgb = rgbString.match(/\d+/g);
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let r = parseInt(rgb[0]).toString(16);
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let g = parseInt(rgb[1]).toString(16);
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let b = parseInt(rgb[2]).toString(16);
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r = r.length === 1 ? `0${r}` : r;
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g = g.length === 1 ? `0${g}` : g;
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b = b.length === 1 ? `0${ b}` : b;
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return '#' + r + g + b;
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};
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2016-03-04 09:55:03 +08:00
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const Palette = React.createClass({
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getInitialState() {
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return { hexColors: null };
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},
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componentDidMount() {
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const hexColors = {};
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Object.keys(this.colorNodes).forEach(key => {
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hexColors[key] = rgbToHex(getComputedStyle(this.colorNodes[key])['background-color'])
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});
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this.setState({ hexColors });
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},
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render() {
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this.colorNodes = this.colorNodes || {};
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const { name, description, color } = this.props.color;
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const { hexColors } = this.state;
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const colors = [];
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for (let i = 1; i <= 10; i++) {
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colors.push(
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<div
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key={i}
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ref={node => { this.colorNodes[`${name}-${i}`] = node; } }
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className={`main-color-item palatte-${name}-${i}`}
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style={{
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color: i > 5 ? '#fff' : 'unset',
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fontWeight: i === 6 ? 'bold' : 'normal',
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}}
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>
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{name}-{i}
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{hexColors ? <span className="main-color-value">{hexColors[`${name}-${i}`]}</span> : null}
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</div>
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);
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}
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return (
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<div className="color-palette">
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<div className="color-title">
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{name}
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<span className="color-description">{description}</span>
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</div>
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<div className="main-color">{colors}</div>
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</div>
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);
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}
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});
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const ExtendPalettes = React.createClass({
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render() {
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const colors = [
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{
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name: 'red',
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description: '热情、警示',
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},
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{
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name: 'green',
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description: '成功、通过、安全',
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},
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{
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name: 'blue',
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description: '专业、科技',
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},
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{
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name: 'pink',
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description: '典雅、明快、女性',
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},
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{
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name: 'orange',
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description: '醒目、温暖',
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},
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{
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name: 'purple',
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description: '高雅、浪漫',
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},
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{
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name: 'yellow',
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description: '活力、提示',
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},
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{
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name: 'cyan',
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description: '清新、冷静、结构化',
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}
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];
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return (
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<div>
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{colors.map((color, i) => <Palette key={color.name} color={color} />)}
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</div>
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);
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}
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});
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ReactDOM.render(<ExtendPalettes key="palettes" />, mountNode);
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`````
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