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a.Dimension(b.rgb[0])},green:function(b){return new a.Dimension(b.rgb[1])},blue:function(b){return new a.Dimension(b.rgb[2])},alpha:function(b){return new a.Dimension(b.toHSL().a)},luma:function(b){return new a.Dimension(Math.round(100*b.luma()*b.alpha),"%")},saturate:function(a,c){if(!a.rgb)return null;var d=a.toHSL();return d.s+=c.value/100,d.s=e(d.s),b(d)},desaturate:function(a,c){var d=a.toHSL();return d.s-=c.value/100,d.s=e(d.s),b(d)},lighten:function(a,c){var d=a.toHSL();return d.l+=c.value/100,d.l=e(d.l),b(d)},darken:function(a,c){var d=a.toHSL();return d.l-=c.value/100,d.l=e(d.l),b(d)},fadein:function(a,c){var d=a.toHSL();return d.a+=c.value/100,d.a=e(d.a),b(d)},fadeout:function(a,c){var d=a.toHSL();return d.a-=c.value/100,d.a=e(d.a),b(d)},fade:function(a,c){var d=a.toHSL();return d.a=c.value/100,d.a=e(d.a),b(d)},spin:function(a,c){var d=a.toHSL(),e=(d.h+c.value)%360;return d.h=0>e?360+e:e,b(d)},mix:function(b,c,d){d||(d=new a.Dimension(50));var e=d.value/100,f=2*e-1,g=b.toHSL().a-c.toHSL().a,h=((-1==f*g?f:(f+g)/(1+f*g))+1)/2,i=1-h,j=[b.rgb[0]*h+c.rgb[0]*i,b.rgb[1]*h+c.rgb[1]*i,b.rgb[2]*h+c.rgb[2]*i],k=b.alpha*e+c.alpha*(1-e);return new a.Color(j,k)},greyscale:function(b){return this.desaturate(b,new a.Dimension(100))},contrast:function(a,b,c,e){if(!a.rgb)return null;if("undefined"==typeof c&&(c=this.rgba(255,255,255,1)),"undefined"==typeof b&&(b=this.rgba(0,0,0,1)),b.luma()>c.luma()){var f=c;c=b,b=f}return e="undefined"==typeof e?.43:d(e),a.luma()*a.alphah.value)&&(j[e]=f)):(k[i]=j.length,j.push(f))):j.push(f);return 1==j.length?j[0]:(c=j.map(function(a){return a.toCSS(this.env)}).join(this.env.compress?",":", "),new a.Anonymous((b?"min":"max")+"("+c+")"))},min:function(){return this._minmax(!0,arguments)},max:function(){return this._minmax(!1,arguments)},argb:function(b){return new a.Anonymous(b.toARGB())},percentage:function(b){return new a.Dimension(100*b.value,"%")},color:function(b){if(b instanceof a.Quoted){var c,d=b.value;if(c=a.Color.fromKeyword(d))return c;if(/^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})/.test(d))return new a.Color(d.slice(1));throw{type:"Argument",message:"argument must be a color keyword or 3/6 digit hex e.g. #FFF"}}throw{type:"Argument",message:"argument must be a string"}},iscolor:function(b){return this._isa(b,a.Color)},isnumber:function(b){return this._isa(b,a.Dimension)},isstring:function(b){return this._isa(b,a.Quoted)},iskeyword:function(b){return this._isa(b,a.Keyword)},isurl:function(b){return this._isa(b,a.URL)
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