#3978df
a balanced, vivid blue · cool · closest name: dodgerblue
RGB
57, 120, 223
HSL
217°, 72%, 55%
CMYK
74, 46, 0, 13
Luminance
0.1963
Every format
| HEX | #3978df |
| RGB | rgb(57, 120, 223) |
| HSL | hsl(217, 72%, 55%) |
| CMYK | cmyk(74%, 46%, 0%, 13%) |
| LAB | lab(51.4 15.1 -58.4) |
| LCH | lch(51.4 60.3 284.5) |
| OKLCH | oklch(0.586 0.170 259.8) |
Copy-ready code
/* CSS */
color: #3978df;
background-color: #3978df;
/* Tailwind (arbitrary) */
class="text-[#3978df] bg-[#3978df]"
/* SCSS */
$brand: #3978df;
/* SwiftUI */
Color(red: 0.224, green: 0.471, blue: 0.875)
/* Android */
Color.parseColor("#3978df")Accessibility — WCAG contrast
Aa
#3978df on white: 4.26:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3978df on black: 4.93:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green47.1%
Blue87.5%
CMYK percentages
Cyan74.4%
Magenta46.2%
Yellow0.0%
Key (black)12.5%
Color previews
#3978df text on a black background
contrast 4.93:1
Card sample
#3978df text on a white background
contrast 4.26:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3978df;
Background color
Panel with #3978df background
background-color: #3978df;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3978df;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 120, 223, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 120, 223, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3978df; background: linear-gradient(135deg, #3978df, #6939DF);