Sherwin Williams

Secure Blue

SW 6508

Secure Blue is a moderately saturated cool blue with gray undertones and an LRV of 22, positioning it in the lower-middle range of light reflectance. It reads as a solid mid-dark blue in daylight and may appear more muted under warm artificial lighting. The gray undertone tempers its saturation, preventing it from reading as overly bright.

This color is commonly applied in bedrooms, home offices, and bathrooms. Secure Blue pairs with Sherwin-Williams Pure White for trim contrast, Greek Villa as a warmer white, Icicle for a lighter tonal blue, and Urbane Bronze for a warm accent.

Brand

Sherwin Williams

Code

SW 6508

Secure Blue in Different Light

Light temperature is measured in Kelvin: a warm 2700K bulb pulls colors toward yellow, while 5000K daylight reads cooler and truer. Check the color at the time of day you actually use the room.

Artificial Lighting

Bedroom scene to simulate Sherwin Williams Secure Blue under artificial light

Natural Lighting

Living room scene to simulate Sherwin Williams Secure Blue under natural light

Technical Specifications

Undertones

Type

Blue

Strength

High

Temperature

cool

Hue Angle

199°

Cyan Family

Lightness

48%

Medium

Saturation

32%

Moderate

LRV

22.0
0%100%
Very Dark
Dark
Medium
Light
Very Light
White

LRV measures how much light a color reflects, from 0 (black) to 100 (pure white). Below about 50 a color needs good lighting to avoid going flat, 60 and up helps brighten a room, and most whites sit above 80.

Color Position
Saturation →
Lightness →

Color Codes

HEX
#5389A1
RGB Decimal
83, 137, 161
RGB Percent
32.5%, 53.7%, 63.1%
HSL
198.5, 32.0%, 47.8%
HSV
198.5, 48.4%, 63.1%
CMYK
48.4%, 14.9%, 0.0%, 36.9%
YIQ
123.6, -39.9, -3.9
XYZ
18.95, 22.30, 37.02
CIE Lab
54.35, -11.15, -18.31
CIE Luv
54.35, -24.53, -25.62
Hunter Lab
47.23, -8.78, -17.34
Decimal
5474721

Coordinating Colors and Color Palettes