The Color API at https://www.thecolorapi.com names a color and converts it between hex, RGB, HSL, HSV, and CMYK, and builds color schemes from it.
None — no key, no signup. Every example runs as-is.
Full reference: https://www.thecolorapi.com/docs
Pass hex, rgb, hsl, or cmyk.
curl "https://www.thecolorapi.com/id?hex=FF5733"{
"hex": {
"value": "#FF5733",
"clean": "FF5733"
},
"rgb": {
"fraction": {
"r": 1,
"g": 0.3411764705882353,
"b": 0.2
},
"r": 255,
"g": 87,
"b": 51,
"value": "rgb(255, 87, 51)"
},
"hsl": {
"fraction": {
"h": 0.02941176470588236,
"s": 1,
"l": 0.6
},
"h": 11,
"s": 100,
"l": 60,
"value": "hsl(11, 100%, 60%)"
},
"hsv": {
"fraction": {
"h": 0.02941176470588236,
"s": 0.8,
"v": 1
},
"value": "hsv(11, 80%, 100%)",
"h": 11,
"s": 80,
"v": 100
},
"name": {
"value": "Outrageous Orange",
"closest_named_hex": "#FF6037",
"exact_match_name": false,
"distance": 107
},
"cmyk": {
"fraction": {
"c": 0,
"m": 0.6588235294117647,
"y": 0.8,
"k": 0
},
"value": "cmyk(0, 66, 80, 0)",
"c": 0,
"m": 66,
"y": 80,
"k": 0
},
"XYZ": {
"fraction": {
"X": 0.5705047058823529,
"Y": 0.4710494117647059,
"Z": 0.2500682352941177
},
"value": "XYZ(57, 47, 25)",
"X": 57,
"Y": 47,
"Z": 25
},
"image": {
"bare": "https://www.thecolorapi.com/id?format=svg&named=false&hex=FF5733",
"named": "https://www.thecolorapi.com/id?format=svg&hex=FF5733"
},
"contrast": {
"value": "#000000"
},
"_links": {
"self": {
"href": "/id?hex=FF5733"
}
},
"_embedded": {}
}mode: monochrome, analogic, complement, triad, quad…
curl "https://www.thecolorapi.com/scheme?hex=FF5733&mode=analogic&count=3"{
"mode": "analogic",
"count": "3",
"colors": [
{
"hex": {
"value": "#FA502C",
"clean": "FA502C"
},
"rgb": {
"fraction": {
"r": 0.9803921568627451,
"g": 0.3137254901960784,
"b": 0.17254901960784313
},
"r": 250,
"g": 80,
"b": 44,
"value": "rgb(250, 80, 44)"
},
"hsl": {
"fraction": {
"h": 0.029126213592232997,
"s": 0.9537037037037038,
"l": 0.5764705882352941
},
"h": 10,
"s": 95,
"l": 58,
"value": "hsl(10, 95%, 58%)"
},
"hsv": {
"fraction": {
"h": 0.029126213592232997,
"s": 0.8240000000000001,
"v": 0.9803921568627451
},
"value": "hsv(10, 82%, 98%)",
"h": 10,
"s": 82,
"v": 98
},
"name": {
"value": "Orange Soda",
"closest_named_hex": "#FA5B3D",
"exact_match_name": false,
"distance": 542
},
"cmyk": {
"fraction": {
"c": 0,
"m": 0.6799999999999999,
"y": 0.824,
"k": 0.019607843137254943
},
"value": "cmyk(0, 68, 82, 2)",
"c": 0,
"m": 68,
"y": 82,
"k": 2
},
"XYZ": {
"fraction": {
"X": 0.5476470588235294,
"Y": 0.4452658823529411,
"Z": 0.22032549019607842
},
"value": "XYZ(55, 45, 22)",
"X": 55,
"Y": 45,
"Z": 22
},
"image": {
"bare": "https://www.thecolorapi.com/id?format=svg&named=false&hex=FA502C",
"named": "https://www.thecolorapi.com/id?format=svg&hex=FA502C"
},
"contrast": {
"value": "#000000"
},
"_links": {
"self": {
"href": "/id?hex=FA502C"
}
},
"_embedded": {}
},
{
"hex": {
"value": "#FCBA32",
"clean": "FCBA32"
},
"rgb": {
"fraction": {
"r": 0.9882352941176471,
"g": 0.7294117647058823,
"b": 0.19607843137254902
},
"r": 252,
"g": 186,
"b": 50,
"value": "rgb(252, 186, 50)"
},
"hsl": {
"fraction": {
"h": 0.11221122112211213,
"s": 0.9711538461538463,
"l": 0.592156862745098
},
"h": 40,
"s": 97,
"l": 59,
"value": "hsl(40, 97%, 59%)"
},
"hsv": {
"fraction": {
"h": 0.11221122112211213,
"s": 0.8015873015873016,
"v": 0.9882352941176471
},
"value": "hsv(40, 80%, 99%)",
"h": 40,
"s": 80,
"v": 99
},
"name": {
"value": "Sunglow",
"closest_named_hex": "#FFCC33",
"exact_match_name": false,
"distance": 488
},
"cmyk": {
"fraction": {
"c": 0,
"m": 0.261904761904762,
"y": 0.8015873015873016,
"k": 0.0117647058823529
},
"value": "cmyk(0, 26, 80, 1)",
"c": 0,
"m": 26,
"y": 80,
"k": 1
},
"XYZ": {
"fraction": {
"X": 0.7037780392156863,
"Y": 0.7459309803921569,
"Z": 0.2923913725490196
},
"value": "XYZ(70, 75, 29)",
"X": 70,
"Y": 75,
"Z": 29
},
"image": {
"bare": "https://www.thecolorapi.com/id?format=svg&named=false&hex=FCBA32",
"named": "https://www.thecolorapi.com/id?format=svg&hex=FCBA32"
},
"contrast": {
"value": "#000000"
},
"_links": {
"self": {
"href": "/id?hex=FCBA32"
}
},
"_embedded": {}
}
],
"seed": {
"hex": {
"value": "#FF5733",
"clean": "FF5733"
},
"rgb": {
"fraction": {
"r": 1,
"g": 0.3411764705882353,
"b": 0.2
},
"r": 255,
"g": 87,
"b": 51,
"value": "rgb(255, 87, 51)"
},
"hsl": {
"fraction": {
"h": 0.02941176470588236,
"s": 1,
"l": 0.6
},
"h": 11,
"s": 100,
"l": 60,
"value": "hsl(11, 100%, 60%)"
},
"hsv": {
"fraction": {
"h": 0.02941176470588236,
"s": 0.8,
"v": 1
},
"value": "hsv(11, 80%, 100%)",
"h": 11,
"s": 80,
"v": 100
},
"name": {
"value": "Outrageous Orange",
"closest_named_hex": "#FF6037",
"exact_match_name": false,
"distance": 107
},
"cmyk": {
"fraction": {
"c": 0,
"m": 0.6588235294117647,
"y": 0.8,
"k": 0
},
"value": "cmyk(0, 66, 80, 0)",
"c": 0,
"m": 66,
"y": 80,
"k": 0
},
"XYZ": {
"fraction": {
"X": 0.5705047058823529,
"Y": 0.4710494117647059,
"Z": 0.2500682352941177
},
"value": "XYZ(57, 47, 25)",
"X": 57,
"Y": 47,
"Z": 25
},
"image": {
"bare": "https://www.thecolorapi.com/id?format=svg&named=false&hex=FF5733",
"named": "https://www.thecolorapi.com/id?format=svg&hex=FF5733"
},
"contrast": {
"value": "#000000"
},
"_links": {
"self": {
"href": "/id?hex=FF5733"
}
},
"_embedded": {}
},
"image": {
"bare": "https://www.thecolorapi.com/scheme?format=svg&named=false&hex=FF5733&mode=analogic&count=3",
"named": "https://www.thecolorapi.com/scheme?format=svg&hex=FF5733&mode=analogic&count=3"
},
"_links": {
"self": "/scheme?hex=FF5733&mode=analogic&count=3",
"schemes": {
"monochrome": "/scheme?hex=FF5733&mode=monochrome&count=3",
"monochrome-dark": "/scheme?hex=FF5733&mode=monochrome-dark&count=3",
"monochrome-light": "/scheme?hex=FF5733&mode=monochrome-light&count=3",
"analogic": "/scheme?hex=FF5733&mode=analogic&count=3",
"complement": "/scheme?hex=FF5733&mode=complement&count=3",
"analogic-complement": "/scheme?hex=FF5733&mode=analogic-complement&count=3",
"triad": "/scheme?hex=FF5733&mode=triad&count=3",
"quad": "/scheme?hex=FF5733&mode=quad&count=3"
}
},
"_embedded": {}
}