Delhi Metro expands its colour palette, Tughlakabad-Aerocity line to be Silver

Having used up all primary colours ( Red, Blue and Yellow) and secondary colours (Orange, Green and Purple) for easily identifying its various lines, the Delhi Metro is now delving deep into the colours palette to identify corridors being developed under its Phase 4.

The upcoming Tughlakabad to Aerocity corridor of Phase 4 was Wednesday assigned the colour ‘Silver’ by the Delhi Metro Rail Corporation (DMRC).

Interestingly, silver is not a colour by itself, rather it is a variant of grey, a neutral or achromatic colour (meaning a colour without a colour), which is an intermediate shade of black and white.

Assigning colours and numbers to the three new lines, the DMRC said the Tughlakabad to Aerocity line will be known as the Silver Line. The corridor from Majlis Park to Maujpur will be known as Pink Line Extension, while the Janakpuri West to RK Ashram corridor will be identified as a Magenta Line Extension and will take the colours of their mother lines.

The Silver Line has also been numbered as Line 10 by the DMRC. The nine existing lines of the Delhi Metro – used by an estimated 27 lakh commuters daily – is identified by a different colour each, so that people are able to remember their routes/trains easily.

“Silver has been selected as the colour code for the Tughlakabad to Aerocity corridor. There is no specific rule to deciding the colour of a particular line. However, colours that are distinguishable and can be easily remembered by the commuters are selected,” Anuj Dayal, executive director (corporate communications), DMRC, said.

Dayal added, “This section is the 10th line to get a colour code. The Majlis Park to Maujpur corridor is an extension of the Pink Line, while the Janakpuri West to RK Ashram corridor will be an extension of the Magenta Line and will retain the same colour codes.”

Even from among the six tertiary colours -- Amber (yellow+orange), Vermilion (red+orange), Magenta (red+purple), Violet (blue+purple), Teal/Aqua (blue+green), and Chartreuse/lime green (yellow+green) -- the DMRC has already used up Magenta and Violet.

The Delhi Metro has so far used Red for Rithala-Shaheed Sthal corridor; Yellow for Huda City Centre-Samaypur Badli, Blue for Dwarka Sector 21-Vaishali/Noida Electronic City; Green for Inderlok/Kirti Nagarto Bahadurgarh; Violet for Kashmere Gate-Ballabhgarh; Pink for Majlis Park-Shiv Vihar; Magenta for Janakpuri West-Botanical Garden, Grey for Dwarka-Najafgarh and Orange for the Airport Express Line.