Black Rock

#040731

General Information about #040731

The hex color #040731, often referred to as Black Rock, is a very dark shade of blue-black, residing in the lower range of the color spectrum in terms of lightness and saturation. It evokes feelings of sophistication, mystery, and depth. In RGB color space, it is composed of 1.6% red, 2.7% green, and 19.2% blue. In CMYK color space, it consists of 92% cyan, 86% magenta, 0% yellow, and 81% black. This color is frequently used in design to create a sense of elegance and formality. Its low luminance value makes it essential to consider accessibility guidelines when using it on websites or in print, ensuring sufficient contrast with foreground elements. The color is most appropriate for dark mode designs. Its deep, muted nature makes it versatile, suitable for backgrounds, accents, and even branding elements.

The hex color #040731, also known as Black Rock, presents significant accessibility challenges due to its very low luminance. With such a dark shade, it is crucial to ensure sufficient contrast when using it for text or interactive elements. A light text color, such as white or a very pale yellow, is essential to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratio. This ensures that users with visual impairments, including those with low vision or color blindness, can perceive the content effectively. Avoid pairing it with mid-tone colors, as the contrast will likely be insufficient. Consider using contrast checking tools to verify compliance. Additionally, provide alternative cues beyond color alone to convey information, such as text labels or icons, to ensure accessibility for all users. When using #040731 as a background, ensure any interactive elements layered on top have clear visual boundaries and states to assist users in understanding interactivity.

Shades

Digital Color Formats

RGB
4 7 49
RGB4 7 49
Red
Green
Blue
HSL
236deg 84.91% 10.39%
23684.9110.39HSL
Hue
Saturation
Lightness
HWB
236deg 1.57% 80.78%
2361.5780.78HWB
Hue
Whiteness
Blackness
hex#040731
rgb4 7 49
hsl236deg 84.91% 10.39%
cmyk91.84% 85.71% 0% 80.78%
hwb236deg 1.57% 80.78%
xyz-d650.01 0 0.03
oklch0.1657 0.082 269.43
oklab0.1657 0 -0.08
CMYK
91.84% 85.71% 0% 80.78%
91.8485.71080.78CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.01 0 0.03
0.0100.03XYZ
X
Y
Z
OKLCH
0.1657 0.082 269.43
0.16570.082269.43LCH
Lightness
Chroma
Hue
OKLAB
0.1657 0 -0.08
0.16570-0.08LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons