Chathams Blue

#155B6B

General Information about Chathams Blue

The hexadecimal color #155B6B, also recognized as Chathams Blue, is a dark shade of cyan. It is composed of 8.24% red, 35.69% green, and 41.96% blue. In the RGB color model, this corresponds to R:21, G:91, B:107. When converted to the CMYK color model, it consists of 80.37% cyan, 15.0% magenta, 0.0% yellow, and 58.04% black. The hue angle is 191.3 degrees, the saturation is 67.06%, and the lightness is 27.45%. Chathams Blue is often associated with feelings of calmness, stability, and trust. It is frequently used in corporate branding to convey professionalism and reliability. Its muted tone makes it a versatile color that can be incorporated into various design applications, from web design to interior decor, offering a sense of sophistication and tranquility.

The color #155B6B, also known as Chathams Blue, presents some accessibility challenges. Its relatively low luminance value can create insufficient contrast when used as text against a white or very light background. This can make it difficult for users with visual impairments to read the text. To ensure accessibility, it is crucial to use a color contrast checker to verify that the contrast ratio meets WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. If the contrast is insufficient, consider using a lighter shade of the background color or a darker shade of the text color. Pairing #155B6B with very light yellows, oranges, or creams can improve readability. Additionally, avoid using this color for essential UI elements without proper contrast, as it can hinder usability for people with disabilities.

Shades

Digital Color Formats

RGB
21 91 107
RGB21 91 107
Red
Green
Blue
HSL
191.16deg 67.19% 25.1%
191.1667.1925.1HSL
Hue
Saturation
Lightness
HWB
191.16deg 8.24% 58.04%
191.168.2458.04HWB
Hue
Whiteness
Blackness
hex#155B6B
rgb21 91 107
hsl191.16deg 67.19% 25.1%
cmyk80.37% 14.95% 0% 58.04%
hwb191.16deg 8.24% 58.04%
xyz-d650.07 0.09 0.15
oklch0.4371 0.0705 217.06
oklab0.4371 -0.06 -0.04
CMYK
80.37% 14.95% 0% 58.04%
80.3714.95058.04CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.09 0.15
0.070.090.15XYZ
X
Y
Z
OKLCH
0.4371 0.0705 217.06
0.43710.0705217.06LCH
Lightness
Chroma
Hue
OKLAB
0.4371 -0.06 -0.04
0.4371-0.06-0.04LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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