#1E3A8A color
The swatch above shows #1E3A8A 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.
#1E3A8A is a dark, moderately saturated blue, closest to the CSS named color darkslateblue (#483D8B).
It is also a Tailwind CSS default: blue-900. That means you can write bg-blue-900 or text-blue-900 directly, with no arbitrary-value brackets and no entry in your theme config.
Color values
| HEX | #1E3A8A |
| RGB | rgb(30, 58, 138) |
| HSL | hsl(224, 64%, 33%) |
| CMYK | cmyk(78%, 58%, 0%, 46%) |
| Decimal | 1981066 |
| CSS | color: #1E3A8A; |
| Android | 0xFF1E3A8A |
| Swift | UIColor(red: 0.118, green: 0.227, blue: 0.541, alpha: 1) |
Accessibility and contrast
| White text on #1E3A8A | 10.36:1 — AA pass · AA large pass · AAA pass |
| Black text on #1E3A8A | 2.03:1 — 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 #1E3A8A
Each swatch keeps the hue and saturation of #1E3A8A and varies only lightness — the quickest way to build a usable scale from a single brand color.
Colors that go with #1E3A8A
Harmonies generated by rotating the hue on the color wheel while holding saturation and lightness constant.
Using #1E3A8A in code
/* CSS */
.element { color: #1E3A8A; background-color: #1E3A8A; }
.element { color: rgb(30 58 138); }
.element { color: hsl(224 64% 33%); }
/* Tailwind */
<div class="bg-blue-900 text-white">
/* SCSS variable */
$brand: #1E3A8A;Frequently asked questions
What color is #1E3A8A?
#1E3A8A is a dark, moderately saturated blue. Its hue sits at 224° on the color wheel, with 64% saturation and 33% lightness.
What is #1E3A8A in RGB?
#1E3A8A converts to rgb(30, 58, 138) — 30 red, 58 green and 138 blue.
What is #1E3A8A in CMYK?
Approximately cmyk(78%, 58%, 0%, 46%). 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 #1E3A8A be white or black?
White gives the better contrast ratio (10.36:1 versus 2.03:1).
What is the complementary color of #1E3A8A?
#8A6D1E — the hue directly opposite #1E3A8A on the color wheel.