Midnight Blue Pearl Peel/Seal Envelope. 155mm x 155mm. 120gsm. Blue Wallet Flap Square Pearlescent Envelopes.

Midnight Blue Square Pearlescent Envelope. Deep, intensely dark and sophisticated blue. 155mm x 155mm Peel/Seal Wallet Envelope. 120gsm Blue FSC Sustainable Paper. Supplied With Flaps Closed. To Fit 6 inch Square Inserts.


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Midnight Blue Square Pearl Envelope – 155mm x 155mm – Straight Wallet Flap Peel/Seal Blue Coloured Envelope – 120gsm Pearlescent Paper – To Fit 6 inch Square Inserts

ColorSono Pearl Midnight Blue, Adding a touch of glamour to your mailing, the pearl sheen outer to the paper ensures the recipient knows there is something a little bit special inside. View the full range of pearlescent colours and sizes available here. Deep, dark and formal blue. Projects sophistication, regality, power and authority. Sold individually from just £ 0.16p each. With no minimum quantity, and automatic volume discounts the more you buy, you can buy these envelopes individually ensuring that you get exactly the right amount for your project.

Need to match this blue/midnight blue square wallet envelope with a colour reference?

See our colour guide below…

* As a result of the nature of computer monitors, colours shown on screen are indicative, and they may not match exactly the colors of the actual product. Having envelope manufacturing machines that work at high speeds combined with the variability of the raw paper itself can result in size inconsistencies, tolerances for manufacturing are +/- 2mm in any direction. If in doubt, please contact us prior to ordering.

Need Information Or Advice On This Midnight Blue Wallet Flap Square Pearlescent Envelope ? Contact Us.

Contact us today and we can offer advice, recommendations and alternatives to make sure you get the perfect envelope for your occasion, or see all the colours for this range in this size here

Call: 01903 685685

Midnight Blue 155mm x 155mm Square Pearlescent Envelope Specifications

  • Height: 155mm
  • Width: 155mm
  • Weight: 120gsm
  • Flap Type: Peel/Seal
  • Flap Position: Flaps Closed
  • Harmonisation Code: 48171000
  • Material: FSC Sustainable Paper
  • Brand: ColorSono Sheen
  • GTN-13: 5056237165642
  • MPN: PM40-22155

Envelope Features

High Sheen | Pearlised Finish | 120gsm | Royal Mail Letter Postable | FSC Sustainable Paper

Where To Use This Envelope

Special Occasions | Wedding Stationery | Greeting Cards | Party Events | Gift Vouchers

ColorSono Sheen Midnight Blue Colour Reference Guide

Pantone: 540
CMYK: cmyk (100%, 45%, 0%, 66%)
RGB: rgb (0,48,87)
Hex: #003057

Sizing Guide Notes For Choosing The Perfect Pearlescent 6 Inch Square Envelope

Our 6 inch square pearl envelopes are 155mm x 155mm in size. They are designed to fit around 6 inch square inserts and are a traditional favourite, typically for wedding invitations. They all come with a straight edge peel/seal strip and are available in a wide range of shimmering colours.

Weight7 g
Dimensions15.5 × 15.5 × 0.01 cm
Base Colour


Colour Name

Midnight Blue


155 x 155mm

Internal Fit

Square Invitations

Pack Quantity

Single (Choose Quantity)



Paper Weight


Seal/Flap Style

Peel/Seal Straight Flap