Nile Blue

#1F3148

General Information about #1F3148

The color #1F3148, often referred to as Nile Blue, is a deep, muted shade of blue with a subtle hint of gray. It evokes a sense of calm, stability, and sophistication. In the RGB color model, it is composed of 12.2% red, 19.2% green, and 28.2% blue. Its hexadecimal representation (#1F3148) is widely used in web design and graphic design for specifying colors precisely. This color falls within the cool color spectrum, making it suitable for creating a relaxing and professional atmosphere. Its understated nature allows it to pair well with a variety of other colors, ranging from warm neutrals to brighter, more vibrant hues. It is also a popular choice for backgrounds and text, when properly contrasted. The color name Nile Blue is inspired by the color of the Nile river.

The hex color #1F3148, also known as Nile Blue, presents some accessibility challenges, particularly in text-based applications. Its relatively low luminance value (compared to a pure white background) results in a moderate contrast ratio. When used as text against a white background, it might not meet the WCAG (Web Content Accessibility Guidelines) AA standards for normal text, which require a contrast ratio of at least 4.5:1. Larger text sizes (14pt bold or 18pt regular) have a lower contrast requirement of 3:1, which #1F3148 might fulfill. It's crucial to test this color combination with accessibility tools or use a color contrast analyzer to ensure sufficient contrast. When used for interactive elements like buttons or links, it's essential to provide clear visual cues beyond color alone, such as underlines or icons, to assist users with visual impairments. Pairing it with a much lighter color for text is highly recommended for optimal readability and accessibility.

Shades

Digital Color Formats

RGB
31 49 72
RGB31 49 72
Red
Green
Blue
HSL
213.66deg 39.81% 20.2%
213.6639.8120.2HSL
Hue
Saturation
Lightness
HWB
213.66deg 12.16% 71.76%
213.6612.1671.76HWB
Hue
Whiteness
Blackness
hex#1F3148
rgb31 49 72
hsl213.66deg 39.81% 20.2%
cmyk56.94% 31.94% 0% 71.76%
hwb213.66deg 12.16% 71.76%
xyz-d650.03 0.03 0.07
oklch0.3091 0.048 255.04
oklab0.3091 -0.01 -0.05
CMYK
56.94% 31.94% 0% 71.76%
56.9431.94071.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.03 0.03 0.07
0.030.030.07XYZ
X
Y
Z
OKLCH
0.3091 0.048 255.04
0.30910.048255.04LCH
Lightness
Chroma
Hue
OKLAB
0.3091 -0.01 -0.05
0.3091-0.01-0.05LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons