SPO-Column-Formatting-Example02.json

{
    "$schema": "http://columnformatting.sharepointpnp.com/columnFormattingSchema.json",
    "debugMode": true,
    "elmType": "div",
    "txtContent": "@currentField",
    "style": {
                "background-color": {
                                        "operator": "?",
                                        "operands": [
                                        {
                                            "operator": "<",
                                            "operands": [
                                                "[$Completed]",
                                                "0.5"
                                            ]
                                        },
                                        "red",
                                        {
                                            "operator": "?",
                                            "operands": [
                                            {
                                                "operator": "<",
                                                "operands": [
                                                    "[$Completed]",
                                                    "1"
                                                ]
                                            },
                                            "orange",
                                            "green"
                                        ]
                                    }   

                                ]
                            },
                "color": "white",
                "padding-left": "10px"
    }

 }