Ultramarine

#1F00A3

General Information about Ultramarine

The hex color #1F00A3, also known as Ultramarine, is a deep and captivating shade of blue. Ultramarine is derived from the Latin 'ultramarinus,' meaning 'beyond the sea,' reflecting its historical origin as a pigment sourced from lapis lazuli imported from Asia. Historically, it was highly prized, often more valuable than gold. Today, synthetic ultramarine offers a more accessible alternative, retaining its rich and vibrant character. In color theory, ultramarine is considered a cool color, evoking feelings of calmness, serenity, and sophistication. Its wavelength is around 460-482 nm. It is often associated with depth, stability, and trust, making it a popular choice for branding and design projects.

The color #1F00A3, a deep shade of ultramarine, presents certain accessibility considerations for web design. Its dark nature means that sufficient contrast is crucial when pairing it with text or other interactive elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text (14pt bold or 18pt regular) against its background. Lighter colors like white, light gray, or pale yellow would generally provide adequate contrast. It's essential to avoid using this color as a background for large blocks of text unless paired with a very light foreground color. Also, interactive elements like buttons or links should have clear visual cues beyond just color to ensure usability for users with color vision deficiencies. Tools like contrast checkers can assist in verifying compliance with accessibility standards.

Shades

Digital Color Formats

RGB
31 0 163
RGB31 0 163
Red
Green
Blue
HSL
251.41deg 100% 31.96%
251.4110031.96HSL
Hue
Saturation
Lightness
HWB
251.41deg 0% 36.08%
251.41036.08HWB
Hue
Whiteness
Blackness
hex#1F00A3
rgb31 0 163
hsl251.41deg 100% 31.96%
cmyk80.98% 100% 0% 36.08%
hwb251.41deg 0% 36.08%
xyz-d650.07 0.03 0.35
oklch0.335 0.2169 271.47
oklab0.335 0.01 -0.22
CMYK
80.98% 100% 0% 36.08%
80.98100036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.35
0.070.030.35XYZ
X
Y
Z
OKLCH
0.335 0.2169 271.47
0.3350.2169271.47LCH
Lightness
Chroma
Hue
OKLAB
0.335 0.01 -0.22
0.3350.01-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons