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#424dfd

a balanced, electric blue · warm · closest name: slateblue

RGB
66, 77, 253
HSL
237°, 98%, 63%
CMYK
74, 70, 0, 1
Luminance
0.1356

Every format

HEX#424dfd
RGBrgb(66, 77, 253)
HSLhsl(237, 98%, 63%)
CMYKcmyk(74%, 70%, 0%, 1%)
LABlab(43.6 53.0 -87.9)
LCHlch(43.6 102.7 301.1)
OKLCHoklch(0.536 0.255 271.4)

Copy-ready code

/* CSS */
color: #424dfd;
background-color: #424dfd;
/* Tailwind (arbitrary) */
class="text-[#424dfd] bg-[#424dfd]"
/* SCSS */
$brand: #424dfd;
/* SwiftUI */
Color(red: 0.259, green: 0.302, blue: 0.992)
/* Android */
Color.parseColor("#424dfd")

Accessibility — WCAG contrast

Aa
#424dfd on white: 5.66:1
AA ✓ pass · AA-large · AAA
Aa
#424dfd on black: 3.71:1
AA ✗ fail · AA-large · AAA
true color
protanopia
deuteranopia
tritanopia

RGB percentages

Red25.9%
Green30.2%
Blue99.2%

CMYK percentages

Cyan73.9%
Magenta69.6%
Yellow0.0%
Key (black)0.8%

Color previews

#424dfd text on a black background

contrast 3.71:1

Card sample

#424dfd text on a white background

contrast 5.66:1

Card sample

CSS3 live lab

Text font color

The quick brown fox

color: #424dfd;
Background color
Panel with #424dfd background
background-color: #424dfd;
Text shadow — hex

Glowing headline

text-shadow: 2px 2px 8px #424dfd;
Text shadow — RGB

Soft neon halo

text-shadow: 0 0 14px rgba(66, 77, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(66, 77, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #424dfd;
background: linear-gradient(135deg, #424dfd, #B442FD);

Monochromatic scale

Palettes built from #424dfd

Shades — darker

Tints — lighter

Hue & tone neighbors

Color harmonies

Nearest named colors

Work with #424dfd in the Color Lab