# colour.constants.K_M¶

colour.constants.K_M = 683.0

Rounded maximum photopic luminous efficiency $$K_m$$ value in $$lm\cdot W^{-1}$$.

K_M : numeric

Notes

• To be adequate for all practical applications the $$K_m$$ value has been rounded from the original 683.002 value.

References

[WS00g]