#1F2937 color
The swatch above shows #1F2937 with its hex code written on it in white and in black, so you can see which of the two is legible before reading the measured ratios below.
#1F2937 is a very dark, muted blue, closest to the CSS named color midnightblue (#191970).
It is also a Tailwind CSS default: gray-800. That means you can write bg-gray-800 or text-gray-800 directly, with no arbitrary-value brackets and no entry in your theme config.
Color values
| HEX | #1F2937 |
| RGB | rgb(31, 41, 55) |
| HSL | hsl(215, 28%, 17%) |
| CMYK | cmyk(44%, 25%, 0%, 78%) |
| Decimal | 2042167 |
| CSS | color: #1F2937; |
| Android | 0xFF1F2937 |
| Swift | UIColor(red: 0.122, green: 0.161, blue: 0.216, alpha: 1) |
Accessibility and contrast
| White text on #1F2937 | 14.68:1 — AA pass · AA large pass · AAA pass |
| Black text on #1F2937 | 1.43:1 — AA fail · AA large fail · AAA fail |
| Recommended text color | white |
WCAG 2.1 asks for at least 4.5:1 for body text and 3:1 for large text (18 pt, or 14 pt bold).
Tints and shades of #1F2937
Each swatch keeps the hue and saturation of #1F2937 and varies only lightness — the quickest way to build a usable scale from a single brand color.
Colors that go with #1F2937
Harmonies generated by rotating the hue on the color wheel while holding saturation and lightness constant.
Using #1F2937 in code
/* CSS */
.element { color: #1F2937; background-color: #1F2937; }
.element { color: rgb(31 41 55); }
.element { color: hsl(215 28% 17%); }
/* Tailwind */
<div class="bg-gray-800 text-white">
/* SCSS variable */
$brand: #1F2937;Frequently asked questions
What color is #1F2937?
#1F2937 is a very dark, muted blue. Its hue sits at 215° on the color wheel, with 28% saturation and 17% lightness.
What is #1F2937 in RGB?
#1F2937 converts to rgb(31, 41, 55) — 31 red, 41 green and 55 blue.
What is #1F2937 in CMYK?
Approximately cmyk(44%, 25%, 0%, 78%). Print output depends on the ICC profile of the press and paper, so treat this as a starting point rather than an exact match.
Should text on #1F2937 be white or black?
White gives the better contrast ratio (14.68:1 versus 1.43:1).
What is the complementary color of #1F2937?
#372D1F — the hue directly opposite #1F2937 on the color wheel.