#0040FF color
#0040FF is a medium, vivid blue, closest to the CSS named color royalblue (#4169E1).
Color values
| HEX | #0040FF |
| RGB | rgb(0, 64, 255) |
| HSL | hsl(225, 100%, 50%) |
| CMYK | cmyk(100%, 75%, 0%, 0%) |
| Decimal | 16639 |
| CSS | color: #0040FF; |
| Android | 0xFF0040FF |
| Swift | UIColor(red: 0.000, green: 0.251, blue: 1.000, alpha: 1) |
Accessibility and contrast
| White text on #0040FF | 6.61:1 — AA pass · AA large pass · AAA fail |
| Black text on #0040FF | 3.18:1 — AA fail · AA large pass · 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 #0040FF
Each swatch keeps the hue and saturation of #0040FF and varies only lightness — the quickest way to build a usable scale from a single brand color.
Colors that go with #0040FF
Harmonies generated by rotating the hue on the color wheel while holding saturation and lightness constant.
Using #0040FF in code
/* CSS */
.element { color: #0040FF; background-color: #0040FF; }
.element { color: rgb(0 64 255); }
.element { color: hsl(225 100% 50%); }
/* Tailwind arbitrary value */
<div class="bg-[#0040FF] text-white">
/* SCSS variable */
$brand: #0040FF;Frequently asked questions
What color is #0040FF?
#0040FF is a medium, vivid blue. Its hue sits at 225° on the color wheel, with 100% saturation and 50% lightness.
What is #0040FF in RGB?
#0040FF converts to rgb(0, 64, 255) — 0 red, 64 green and 255 blue.
What is #0040FF in CMYK?
Approximately cmyk(100%, 75%, 0%, 0%). 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 #0040FF be white or black?
White gives the better contrast ratio (6.61:1 versus 3.18:1).
What is the complementary color of #0040FF?
#FFBF00 — the hue directly opposite #0040FF on the color wheel.