Congress Blue

#133F88

About Congress Blue

The color #133F88, also known as Congress Blue, is a dark shade of blue that evokes feelings of trust, stability, and authority. It is often associated with institutions, governments, and professional organizations. This color is composed of 7.45% red, 24.71% green, and 53.33% blue. In the RGB color space, it is closer to blue than to green or red, giving it its distinct blue appearance. Congress Blue is frequently used in designs where a sense of formality and reliability is desired. In web design, it can be utilized for headers, backgrounds, and accents, especially in websites for corporations, educational institutions, and governmental agencies. Its hexadecimal value of #133F88 makes it easily identifiable and usable across various digital platforms.

The hex color #133F88, also known as Congress Blue, presents some accessibility challenges due to its relatively low lightness value of 0.16. This means that text rendered in this color may lack sufficient contrast against lighter backgrounds, potentially making it difficult for users with visual impairments to read comfortably. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using #133F88 for text requires careful consideration of the background color to ensure compliance. It is advisable to pair it with very light colors like white or pale yellows to achieve acceptable contrast. Tools for contrast checking are readily available online to help developers assess and adjust color combinations for optimal readability and inclusivity. When using this color for interactive elements, supplementary visual cues are recommended to ensure usability for all users.

Shades

Digital Color Formats

RGB
19 63 136
RGB19 63 136
Red
Green
Blue
HSL
217.44deg 75.48% 30.39%
217.4475.4830.39HSL
Hue
Saturation
Lightness
HWB
217.44deg 7.45% 46.67%
217.447.4546.67HWB
Hue
Whiteness
Blackness
hex#133F88
rgb19 63 136
hsl217.44deg 75.48% 30.39%
cmyk86.03% 53.68% 0% 46.67%
hwb217.44deg 7.45% 46.67%
xyz-d650.06 0.05 0.24
oklch0.3844 0.1314 260.21
oklab0.3844 -0.02 -0.13
CMYK
86.03% 53.68% 0% 46.67%
86.0353.68046.67CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.05 0.24
0.060.050.24XYZ
X
Y
Z
OKLCH
0.3844 0.1314 260.21
0.38440.1314260.21LCH
Lightness
Chroma
Hue
OKLAB
0.3844 -0.02 -0.13
0.3844-0.02-0.13LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons