Nile Blue

#1F3B4A

General Information about #1F3B4A

The hex color #1f3b4a, also known as Nile Blue, is a dark, muted shade of blue with a subtle grey undertone. This color evokes feelings of calmness, stability, and sophistication, making it a popular choice across various design fields. In the RGB color model, #1f3b4a consists of 12.2% red, 23.1% green, and 29% blue. In the CMYK color model, commonly used for printing, it comprises 58% cyan, 20% magenta, 0% yellow, and 71% black. Its hex code translates to a relatively low saturation and luminance, contributing to its understated nature. Nile Blue is often associated with professionalism, trust, and tranquility, making it suitable for brands and designs aiming to project these qualities. It's versatile enough to be used as a primary color or an accent, depending on the desired aesthetic.

The hex color #1f3b4a, a dark and muted blue, presents some accessibility challenges, particularly regarding color contrast. When used as a background color, it's crucial to ensure that any text or interactive elements layered on top have sufficient contrast to be legible for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal-sized text and 3:1 for large text. Therefore, pairing #1f3b4a with light shades of yellow, white, or other high-luminance colors is essential to meet accessibility standards. Developers should use tools like contrast checkers to verify adequate contrast ratios. Careful consideration of font size and weight can also improve readability. Avoid using #1f3b4a for crucial interactive elements without proper contrast, as this can exclude a significant portion of users. Testing with users who have visual impairments is also highly recommended.

Shades

Digital Color Formats

RGB
31 59 74
RGB31 59 74
Red
Green
Blue
HSL
200.93deg 40.95% 20.59%
200.9340.9520.59HSL
Hue
Saturation
Lightness
HWB
200.93deg 12.16% 70.98%
200.9312.1670.98HWB
Hue
Whiteness
Blackness
hex#1F3B4A
rgb31 59 74
hsl200.93deg 40.95% 20.59%
cmyk58.11% 20.27% 0% 70.98%
hwb200.93deg 12.16% 70.98%
xyz-d650.03 0.04 0.07
oklch0.3372 0.0431 233.49
oklab0.3372 -0.03 -0.03
CMYK
58.11% 20.27% 0% 70.98%
58.1120.27070.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.04 0.07
0.030.040.07XYZ
X
Y
Z
OKLCH
0.3372 0.0431 233.49
0.33720.0431233.49LCH
Lightness
Chroma
Hue
OKLAB
0.3372 -0.03 -0.03
0.3372-0.03-0.03LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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