Ultramarine

#1B159F

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #1B159F, is a deep, saturated blue color. Historically, ultramarine was derived from the rare and expensive mineral lapis lazuli, making it a pigment highly prized by artists. Today, synthetic ultramarine is widely available, offering a more accessible alternative. In color theory, ultramarine is considered a cool color, often associated with feelings of calmness, stability, and intelligence. Its deep hue can evoke a sense of sophistication and formality. The color is mostly seen in corporate identity design or luxury brand design. Its RGB values are R:27, G:21, and B:159, indicating a strong dominance of blue. The name “ultramarine” literally means “beyond the sea,” reflecting its origin from across the sea from Europe.

The hex color #1B159F, also known as Ultramarine, presents significant accessibility challenges due to its dark and saturated nature. When used as a background color, it requires very light text to ensure sufficient contrast for readability, especially for users with visual impairments. According to WCAG guidelines, the contrast ratio between the text and background should be at least 4.5:1 for normal text and 3:1 for large text. Ultramarine may struggle to meet these ratios with many common text colors, necessitating careful selection and testing. Designers should use contrast checking tools to verify compliance and consider providing alternative color schemes to enhance accessibility for all users. Furthermore, relying solely on color to convey information should be avoided, and supplementary cues such as text labels or icons should be included to ensure that content remains accessible to individuals who are colorblind or have other visual limitations.

Shades

Digital Color Formats

RGB
27 21 159
RGB27 21 159
Red
Green
Blue
HSL
242.61 76.67% 35.29%
242.6176.6735.29HSL
Hue
Saturation
Lightness
HWB
242.61 8.24% 37.65%
242.618.2437.65HWB
Hue
Whiteness
Blackness
hex#1B159F
rgb27 21 159
hsl242.61 76.67% 35.29%
cmyk83.02% 86.79% 0% 37.65%
hwb242.61 8.24% 37.65%
xyz6.98 3.27 33.06
CMYK
83.02% 86.79% 0% 37.65%
83.0286.79037.65CMYK
Cyan
Magenta
Yellow
Key
XYZ
6.98 3.27 33.06
6.983.2733.06XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025