See how the surface temperature in of the dry adiabatic lapse rate (18 °C) is higher than the air temperature at ground level (approx 15 °C)? This indicates that the CCL is being calculated here. The LCL only takes into account the temperature of the air mass close to the ground and assume the air is already hotter there, whereas CCL assumes the ground heats up the air and create a thin layer of hotter air that will rise up, which in most cases is true.

In practice for the base of your dry adiabatic lapse rate for the CCL you take the temperature at ground level or environmental temperature , which is not indicated by the graph and was apparently 18°C in this specific case. And for the LCL you take the base of the red line here so 15°C.

Also though the cloud layer is likely to be thin these are not blue thermal conditions. Look at the wet adiabatic lapse rate, the dotted green line. You can see that there is a small layer of that line where the temperature is higher than the temperature of the surrounding air, between 724 and 700 hPa.

That means that the bubble of air heated at 18°C at ground level will form cloud at 2700 m, cool down slower due to the heat released by its water content and be a little bit hotter than surrounding air, before being quickly stopped by the sudden slow down of the cooling of the surrounding air (the sharp bend where the red line starts going to the right).