Astronaut Blue

#0A3F63

General Information about Astronaut Blue

The hexadecimal color code #0A3F63 represents a dark shade of blue, often referred to as "Astronaut Blue." In the RGB color model, it is composed of 3.92% red, 24.71% green, and 38.82% blue. This color falls within the blue-cyan spectrum and is characterized by its relatively low saturation and brightness. Colors similar to #0A3F63 evoke feelings of calmness, stability, and sophistication. Due to its low lightness value, it is generally used as a background or accent color, and it is important to consider contrast ratios when using it with text or other foreground elements to ensure accessibility. The color name, Astronaut Blue, suggests associations with space, exploration, and technology, making it a popular choice for brands and designs related to these themes.

The color #0A3F63, also known as Astronaut Blue, presents some accessibility challenges. Its low lightness value results in a dark appearance, which can lead to insufficient contrast when used with text or other interface elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text against its background. When using Astronaut Blue as a background, it's crucial to pair it with a very light color, such as white or a light yellow, to ensure readability and usability. Without sufficient contrast, users with visual impairments may struggle to distinguish text or interactive elements, leading to a poor user experience. Therefore, careful consideration and testing are essential when incorporating this color into designs to meet accessibility standards and cater to a diverse audience.

Shades

Digital Color Formats

RGB
10 63 99
RGB10 63 99
Red
Green
Blue
HSL
204.27deg 81.65% 21.37%
204.2781.6521.37HSL
Hue
Saturation
Lightness
HWB
204.27deg 3.92% 61.18%
204.273.9261.18HWB
Hue
Whiteness
Blackness
hex#0A3F63
rgb10 63 99
hsl204.27deg 81.65% 21.37%
cmyk89.9% 36.36% 0% 61.18%
hwb204.27deg 3.92% 61.18%
xyz-d650.04 0.05 0.12
oklch0.3547 0.0815 244.61
oklab0.3547 -0.03 -0.07
CMYK
89.9% 36.36% 0% 61.18%
89.936.36061.18CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.04 0.05 0.12
0.040.050.12XYZ
X
Y
Z
OKLCH
0.3547 0.0815 244.61
0.35470.0815244.61LCH
Lightness
Chroma
Hue
OKLAB
0.3547 -0.03 -0.07
0.3547-0.03-0.07LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons