Astronaut Blue

#013D5D

General Information about Astronaut Blue

The hexadecimal color #013D5D, also known as Astronaut Blue, is a dark, muted shade of cyan-blue. In the RGB color model, it is composed of 0.39% red, 23.92% green, and 36.47% blue. In the CMYK color model, it consists of 98.97% cyan, 34.11% magenta, 0% yellow, and 63.53% black. This color is often associated with feelings of calmness, stability, and depth. Due to its low lightness value of 0.16, it appears quite dark and requires careful consideration when used in design to ensure sufficient contrast with other elements. The color has a wavelength of approximately 480 nm, placing it within the blue region of the visible spectrum. Its hex triplet is #013D5D.

The color #013D5D, also known as Astronaut Blue, presents some accessibility challenges, especially for users with visual impairments. Its low luminance value of 0.02 means that it has a very dark appearance. When used as a background color, it requires very light text to ensure sufficient contrast. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text (14pt bold or 18pt regular). Using white (#FFFFFF) text on a #013D5D background yields a contrast ratio of approximately 14.8:1, which meets the AA and AAA standards. However, using colors like light gray or pale yellow may not provide sufficient contrast, making the content difficult to read. It is crucial to test color combinations with accessibility tools to ensure compliance and readability for all users.

Shades

Digital Color Formats

RGB
1 61 93
RGB1 61 93
Red
Green
Blue
HSL
200.87deg 97.87% 18.43%
200.8797.8718.43HSL
Hue
Saturation
Lightness
HWB
200.87deg 0.39% 63.53%
200.870.3963.53HWB
Hue
Whiteness
Blackness
hex#013D5D
rgb1 61 93
hsl200.87deg 97.87% 18.43%
cmyk98.92% 34.41% 0% 63.53%
hwb200.87deg 0.39% 63.53%
xyz-d650.04 0.04 0.11
oklch0.3435 0.0783 240.23
oklab0.3435 -0.04 -0.07
CMYK
98.92% 34.41% 0% 63.53%
98.9234.41063.53CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.04 0.04 0.11
0.040.040.11XYZ
X
Y
Z
OKLCH
0.3435 0.0783 240.23
0.34350.0783240.23LCH
Lightness
Chroma
Hue
OKLAB
0.3435 -0.04 -0.07
0.3435-0.04-0.07LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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