#3978fd
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 120, 253
HSL
221°, 98%, 61%
CMYK
78, 53, 0, 1
Luminance
0.2139
Every format
| HEX | #3978fd |
| RGB | rgb(57, 120, 253) |
| HSL | hsl(221, 98%, 61%) |
| CMYK | cmyk(78%, 53%, 0%, 1%) |
| LAB | lab(53.4 26.1 -71.9) |
| LCH | lch(53.4 76.5 289.9) |
| OKLCH | oklch(0.607 0.209 262.7) |
Copy-ready code
/* CSS */
color: #3978fd;
background-color: #3978fd;
/* Tailwind (arbitrary) */
class="text-[#3978fd] bg-[#3978fd]"
/* SCSS */
$brand: #3978fd;
/* SwiftUI */
Color(red: 0.224, green: 0.471, blue: 0.992)
/* Android */
Color.parseColor("#3978fd")Accessibility — WCAG contrast
Aa
#3978fd on white: 3.98:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3978fd on black: 5.28:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green47.1%
Blue99.2%
CMYK percentages
Cyan77.5%
Magenta52.6%
Yellow0.0%
Key (black)0.8%
Color previews
#3978fd text on a black background
contrast 5.28:1
Card sample
#3978fd text on a white background
contrast 3.98:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3978fd;
Background color
Panel with #3978fd background
background-color: #3978fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3978fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 120, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 120, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3978fd; background: linear-gradient(135deg, #3978fd, #7D39FD);