Nile Blue

#213A4A

General Information about Nile Blue

The hexadecimal color code #213A4A represents a dark shade of blue, often referred to as Nile Blue. It is composed of 12.9% red, 22.7% green, and 29% blue. In the RGB color model, this translates to 33 red, 58 green, and 74 blue. The CMYK representation of #213A4A is approximately 55.41% cyan, 21.62% magenta, 0% yellow, and 71% black. This color is often associated with calmness, stability, and professionalism, making it suitable for various applications in design and branding. Its subtle and muted nature provides a sophisticated and understated aesthetic, distinct from brighter and more vibrant blues. The color can be used to create an atmosphere of trust and reliability.

The hex color #213A4A, also known as Nile Blue, presents some accessibility challenges, particularly in text-based contexts. Its relatively low luminance value means that it requires careful consideration of foreground text colors to ensure sufficient contrast for readability. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #213A4A as a background, pairing it with light colors such as white (#FFFFFF) or very light grays can help meet these contrast requirements. Tools like contrast checkers can be used to accurately assess the contrast ratio between #213A4A and chosen foreground colors. Additionally, avoid using this color for essential information or interactive elements without proper contrast, as it may pose difficulties for users with visual impairments. When used on interactive elements, consider using focus indicators with a high contrast ratio.

Shades

Digital Color Formats

RGB
33 58 74
RGB33 58 74
Red
Green
Blue
HSL
203.41deg 38.32% 20.98%
203.4138.3220.98HSL
Hue
Saturation
Lightness
HWB
203.41deg 12.94% 70.98%
203.4112.9470.98HWB
Hue
Whiteness
Blackness
hex#213A4A
rgb33 58 74
hsl203.41deg 38.32% 20.98%
cmyk55.41% 21.62% 0% 70.98%
hwb203.41deg 12.94% 70.98%
xyz-d650.03 0.04 0.07
oklch0.3356 0.042 237.93
oklab0.3356 -0.02 -0.04
CMYK
55.41% 21.62% 0% 70.98%
55.4121.62070.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.04 0.07
0.030.040.07XYZ
X
Y
Z
OKLCH
0.3356 0.042 237.93
0.33560.042237.93LCH
Lightness
Chroma
Hue
OKLAB
0.3356 -0.02 -0.04
0.3356-0.02-0.04LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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