Ultramarine

#1B0398

General Information

The hex color #1B0398, also known as Ultramarine, is a deep shade of blue with a strong presence. In the RGB color model, it is composed of 10.6% red, 1.18% green, and 59.61% blue. This color is often associated with qualities such as stability, trust, and sophistication. It is part of the blue color family, which generally evokes feelings of calmness and security. Ultramarine has historical significance, as it was originally derived from the rare and expensive mineral lapis lazuli. Today, it is synthetically produced, making it more widely accessible. Its deep, rich tone makes it a popular choice for various applications, ranging from web design to interior decorating, where it can add a touch of elegance and depth.

The color #1B0398, a deep ultramarine, presents significant accessibility challenges, particularly concerning color contrast. When used as text against a white background, it fails to meet WCAG (Web Content Accessibility Guidelines) AA standards, requiring a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. This means that users with moderate visual impairments may struggle to read content presented in this color. To improve accessibility, consider pairing #1B0398 with much lighter colors for text, such as shades of white or light yellow. Alternatively, using #1B0398 for larger graphical elements or as a background color with very light text can be effective. Always test color combinations with accessibility tools to ensure sufficient contrast for all users, including those with low vision or color blindness. Providing alternative text descriptions for images and icons that use this color is also good practice to ensure information is conveyed effectively to screen reader users. Using a darker version of ultramarine or a gradient that incorporates lighter shades can also enhance readability.

Shades

Digital Color Formats

RGB
27 3 152
RGB27 3 152
Red
Green
Blue
HSL
249.66deg 96.13% 30.39%
249.6696.1330.39HSL
Hue
Saturation
Lightness
HWB
249.66deg 1.18% 40.39%
249.661.1840.39HWB
Hue
Whiteness
Blackness
hex#1B0398
rgb27 3 152
hsl249.66deg 96.13% 30.39%
cmyk82.24% 98.03% 0% 40.39%
hwb249.66deg 1.18% 40.39%
xyz-d650.06 0.03 0.3
oklch0.3195 0.205 270.96
oklab0.3195 0 -0.21
CMYK
82.24% 98.03% 0% 40.39%
82.2498.03040.39CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.06 0.03 0.3
0.060.030.3XYZ
X
Y
Z
OKLCH
0.3195 0.205 270.96
0.31950.205270.96LCH
Lightness
Chroma
Hue
OKLAB
0.3195 0 -0.21
0.31950-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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