"phthalo blue" meaning in English

{
  "etymology_text": "From phthalo and blue, from phthalocyanine.",
  "forms": [
    {
      "form": "phthalo blues",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "phthalo blue (countable and uncountable, plural phthalo blues)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Art",
          "orig": "en:Art",
          "parents": [
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Blues",
          "orig": "en:Blues",
          "parents": [
            "Colors",
            "Light",
            "Vision",
            "Energy",
            "Senses",
            "Nature",
            "Perception",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "phthalo blue:"
        }
      ],
      "glosses": [
        "A bright greenish-blue crystalline synthetic pigment from the group of phthalocyanine dyes."
      ],
      "id": "en-phthalo_blue-en-noun-zwUK7Kax",
      "links": [
        [
          "crystalline",
          "crystalline"
        ],
        [
          "synthetic",
          "synthetic"
        ],
        [
          "pigment",
          "pigment"
        ],
        [
          "phthalocyanine",
          "phthalocyanine"
        ],
        [
          "dye",
          "dye"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "phthalo blue"
}

{
  "etymology_text": "From phthalo and blue, from phthalocyanine.",
  "forms": [
    {
      "form": "phthalo blues",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "phthalo blue (countable and uncountable, plural phthalo blues)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Art",
        "en:Blues"
      ],
      "examples": [
        {
          "text": "phthalo blue:"
        }
      ],
      "glosses": [
        "A bright greenish-blue crystalline synthetic pigment from the group of phthalocyanine dyes."
      ],
      "links": [
        [
          "crystalline",
          "crystalline"
        ],
        [
          "synthetic",
          "synthetic"
        ],
        [
          "pigment",
          "pigment"
        ],
        [
          "phthalocyanine",
          "phthalocyanine"
        ],
        [
          "dye",
          "dye"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "phthalo blue"
}