Ultramarine

#2303B0

General Information about Ultramarine

Ultramarine, represented by the hexadecimal color code #2303B0, is a deep, vivid blue pigment. It is known for its rich and intense hue. Historically, Ultramarine was derived from the precious mineral lapis lazuli, making it a highly valued and expensive pigment, particularly during the Middle Ages and Renaissance. Today, synthetic Ultramarine is widely available, offering the same vibrant color at a fraction of the cost. In color theory, Ultramarine is considered a cool color, often associated with feelings of calmness, depth, and stability. It is frequently used to evoke a sense of trust and reliability. The color's high chroma makes it suitable for applications where a strong visual impact is desired. However, its dark value requires careful consideration of contrast when used in design to ensure readability and accessibility.

The color #2303B0, Ultramarine, presents significant accessibility challenges, especially concerning color contrast. When used as a background, it requires very light text (ideally white or near-white) 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. Ultramarine's darkness necessitates careful consideration of text color choices to meet these standards. It's crucial to use color contrast checkers to verify compliance. For users with visual impairments, including those with low vision or color blindness, insufficient contrast can render content unreadable. Moreover, avoid using Ultramarine as the sole means of conveying information, as colorblind users may not perceive the intended message. Supplement color cues with text labels or other visual indicators to ensure inclusivity and universal usability. Proper implementation and testing are vital when incorporating this color in digital interfaces.

Shades

Digital Color Formats

RGB
35 3 176
RGB35 3 176
Red
Green
Blue
HSL
251.1deg 96.65% 35.1%
251.196.6535.1HSL
Hue
Saturation
Lightness
HWB
251.1deg 1.18% 30.98%
251.11.1830.98HWB
Hue
Whiteness
Blackness
hex#2303B0
rgb35 3 176
hsl251.1deg 96.65% 35.1%
cmyk80.11% 98.3% 0% 30.98%
hwb251.1deg 1.18% 30.98%
xyz-d650.09 0.04 0.41
oklch0.3565 0.2283 271.66
oklab0.3565 0.01 -0.23
CMYK
80.11% 98.3% 0% 30.98%
80.1198.3030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.04 0.41
0.090.040.41XYZ
X
Y
Z
OKLCH
0.3565 0.2283 271.66
0.35650.2283271.66LCH
Lightness
Chroma
Hue
OKLAB
0.3565 0.01 -0.23
0.35650.01-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons