Astronaut

#1F3379

General Information about #1F3379

The hexadecimal color code #1F3379, also known as Astronaut, is a dark shade of blue, embodying sophistication and depth. It is composed of 12.2% red, 20% green, and 47.5% blue. In the RGB color space, it has the numerical values (31, 51, 121). In the CMYK color space, its composition is 74% cyan, 58% magenta, 0% yellow, and 52.5% black. This color is associated with feelings of calmness, trust, and stability. It is often used to represent authority, intelligence, and confidence. Its spectral reflectance indicates that it absorbs most wavelengths of light, reflecting primarily blue light, which accounts for its perceived color. This hue is well-suited for creating a sense of depth and sophistication in various design applications.

The color #1F3379, also known as Astronaut, presents some accessibility challenges, especially for users with visual impairments. Its relatively low luminance means that text rendered in this color requires careful consideration of contrast ratios. According to WCAG guidelines, sufficient contrast between text and background is crucial for readability. For normal text (14pt/18px and above), a contrast ratio of at least 4.5:1 is recommended, while for large text (18pt/24px bold or 24pt/32px regular and above), a ratio of 3:1 is acceptable. When using #1F3379 as a background, pairing it with white or very light shades of yellow or orange would improve readability. Tools like contrast checkers can help ensure compliance with accessibility standards. Also, avoid using this color to convey essential information without providing redundant cues, such as icons or labels, as color perception varies among individuals.

Shades

Digital Color Formats

RGB
31 51 121
RGB31 51 121
Red
Green
Blue
HSL
226.67deg 59.21% 29.8%
226.6759.2129.8HSL
Hue
Saturation
Lightness
HWB
226.67deg 12.16% 52.55%
226.6712.1652.55HWB
Hue
Whiteness
Blackness
hex#1F3379
rgb31 51 121
hsl226.67deg 59.21% 29.8%
cmyk74.38% 57.85% 0% 52.55%
hwb226.67deg 12.16% 52.55%
xyz-d650.05 0.04 0.19
oklch0.3499 0.1221 267.58
oklab0.3499 -0.01 -0.12
CMYK
74.38% 57.85% 0% 52.55%
74.3857.85052.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.05 0.04 0.19
0.050.040.19XYZ
X
Y
Z
OKLCH
0.3499 0.1221 267.58
0.34990.1221267.58LCH
Lightness
Chroma
Hue
OKLAB
0.3499 -0.01 -0.12
0.3499-0.01-0.12LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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