Nile Blue

#183A56

General Information about #183A56 (Nile Blue)

The hexadecimal color code #183A56 represents a dark shade of blue, often referred to as Nile Blue. It is composed of 9.41% red, 22.75% green, and 33.73% blue. In the RGB color model, this translates to 24 red, 58 green, and 86 blue. Its CMYK representation is 0.72 cyan, 0.33 magenta, 0.00 yellow, and 0.66 black. Nile Blue conveys a sense of calmness, stability, and sophistication. It is often associated with trust, security, and authority, making it a popular choice for corporate branding and professional designs. This color is frequently used in industries such as finance, technology, and healthcare to project an image of reliability and competence. Its subtle, muted tone makes it versatile for both background and accent applications.

The hex color #183A56, also known as Nile Blue, presents some accessibility challenges, especially when used as a background color for text. Its relatively low luminance value of approximately 0.042 means that it requires a high contrast ratio with text to ensure readability, particularly for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When pairing #183A56 with text, it's crucial to use light colors like white or very pale shades of yellow or gray to meet these contrast requirements. Tools like contrast checkers can assist in verifying that the chosen color combination provides sufficient contrast. Consider the font size and weight as well, as thicker fonts may improve readability at lower contrast ratios. To avoid accessibility issues, avoid combining Nile Blue with darker shades of blue, green, or black for text or interactive elements.

Shades

Digital Color Formats

RGB
24 58 86
RGB24 58 86
Red
Green
Blue
HSL
207.1deg 56.36% 21.57%
207.156.3621.57HSL
Hue
Saturation
Lightness
HWB
207.1deg 9.41% 66.27%
207.19.4166.27HWB
Hue
Whiteness
Blackness
hex#183A56
rgb24 58 86
hsl207.1deg 56.36% 21.57%
cmyk72.09% 32.56% 0% 66.27%
hwb207.1deg 9.41% 66.27%
xyz-d650.04 0.04 0.09
oklch0.3377 0.0634 246.09
oklab0.3377 -0.03 -0.06
CMYK
72.09% 32.56% 0% 66.27%
72.0932.56066.27CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.04 0.04 0.09
0.040.040.09XYZ
X
Y
Z
OKLCH
0.3377 0.0634 246.09
0.33770.0634246.09LCH
Lightness
Chroma
Hue
OKLAB
0.3377 -0.03 -0.06
0.3377-0.03-0.06LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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