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#040f49

a deep, electric blue · warm · closest name: midnightblue

RGB
4, 15, 73
HSL
230°, 90%, 15%
CMYK
95, 80, 0, 71
Luminance
0.0085

Every format

HEX#040f49
RGBrgb(4, 15, 73)
HSLhsl(230, 90%, 15%)
CMYKcmyk(95%, 80%, 0%, 71%)
LABlab(7.7 21.2 -36.9)
LCHlch(7.7 42.6 299.9)
OKLCHoklch(0.212 0.107 266.1)

Copy-ready code

/* CSS */
color: #040f49;
background-color: #040f49;
/* Tailwind (arbitrary) */
class="text-[#040f49] bg-[#040f49]"
/* SCSS */
$brand: #040f49;
/* SwiftUI */
Color(red: 0.016, green: 0.059, blue: 0.286)
/* Android */
Color.parseColor("#040f49")

Accessibility — WCAG contrast

Aa
#040f49 on white: 17.95:1
AA ✓ pass · AA-large · AAA
Aa
#040f49 on black: 1.17:1
AA ✗ fail · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red1.6%
Green5.9%
Blue28.6%

CMYK percentages

Cyan94.5%
Magenta79.5%
Yellow0.0%
Key (black)71.4%

Color previews

#040f49 text on a black background

contrast 1.17:1

Card sample

#040f49 text on a white background

contrast 17.95:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #040f49;
Background color
Panel with #040f49 background
background-color: #040f49;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #040f49;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(4, 15, 73, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(4, 15, 73, 0.45);
Border & gradient
Gradient panel
border: 3px solid #040f49;
background: linear-gradient(135deg, #040f49, #270449);

Monochromatic scale

Palettes built from #040f49

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #040f49 in the Color Lab