The Stanley 1N series of surface-mounted (SMD) LEDs have a compact and low profile package. Available in a range of single colours and white the Stanley 1N LEDs come with high CRI values. This CRI includes a focus on R9 and R15 special CRI values. They offer anti-sulfurization with a package with no flux degradations at 192 hr (40°C / 80% H2S 3 ppm). Stanley 1N LEDs also have a low level of colour shift over time/temperature.
The coloured LEDs are measured using Correlated Colour Temperature (CCT) which is used for white LEDs. However the values fall below a plank line, creating a coloured appearance.

Visible Light LEDs, Stanley Electric