Subterranean River Color – #1f3b4d: Codes and Complete Breakdown
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The Subterranean River color hex code is #1f3b4d, and it is composed of 12% red, 23% green and 30% blue.
Subterranean River is a dark, bright, and cool color at 60% saturation. It has a contrast ratio of 11.73:1 against a white background, which passes WCAG AA (Web Content Accessibility Guidelines, Level AA) compliance.
For better visibility, it is recommended to use the Subterranean River color (#1f3b4d) against light backgrounds.

Subterranean River Color Shades
Complementary colors
Triadic colors
Tints or lighter colors
Darker colors
Analogous colors
Monochromatic colors
#1f3b4d
Subterranean River Color Codes and Information
Here’s a complete breakdown of the color Subterranean River, including its HEX, RGB, HSL, and CMYK values, as well as other information about the color.
| Data Type | Values/Details |
|---|---|
| Hex | #1f3b4d |
| RGB | rgb(31,59,77) |
| HSL | hsl(203,42.6%,21.2%) |
| CMYK | 60, 23, 0, 70 |
| HSV | 203, 60, 30 |
| RGB % | 12, 23, 30 |
| XYZ | 3.5, 4, 7.6 |
| LAB | 23.7, -4.7, -13.9 |
| Color Category | Dark |
| Color Family | Blue |
| Saturation | 60% |
| Temperature | Cool |
| Contrast Ratio Againt White (#ffffff) | 11.73 (passes WCAG AA) |
| Contrast Ratio Againt Black (#000000) | 1.79 (fails WCAG AA) |
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