#3C66CF#3C66CF
#3C66CF is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.169 H 264.8°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).
Color values
| HEX | #3C66CF |
|---|---|
| RGB | rgb(60, 102, 207) |
| HSL | hsl(223, 60%, 52%) |
| HSV | hsv(223, 71%, 81%) |
| CMYK | cmyk(71%, 50.7%, 0%, 18.8%) |
| CIE-LAB | lab(45.59, 20.99, -58.66) |
| CIE-LCH | lch(45.59, 62.30, 289.69°) |
| OKLab | oklab(53.84% -0.0152 -0.1686) |
| OKLCH | oklch(53.84% 0.169 264.8) |
| XYZ | xyz(17.8734, 14.9665, 60.9663) |
| Luminance | 0.1497 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal Blue
#4169E1
ΔE00 2.73
Cornflower Blue
#5170D7
ΔE00 4.24
Azul
#1D5DEC
ΔE00 4.32
French Blue
#436BAD
ΔE00 4.44
Denim
#1560BD
ΔE00 4.94
Bright Blue
#0165FC
ΔE00 4.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3C66CF #CFA53C
analogous
#3CB0CF #3C66CF #5B3CCF
triadic
#3C66CF #CF3C66 #66CF3C
tetradic
#3C66CF #CF3CB0 #CFA53C #3CCF5B
square
#3C66CF #CF3CB0 #CFA53C #3CCF5B
split-complementary
#3C66CF #CF5B3C #B0CF3C
monochromatic
#1D3674 #294CA5 #3C66CF #6D8DDB #9EB3E7
Accessibility & contrast
On white
5.26
#3C66CF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.99
#3C66CF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3C66CF
5.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3C66CF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3C66CF | 1.00 | 5.26 | 3.99 | 5.26 |
| #FFFFFF | 5.26 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.26 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2573D3
Deuteranopia (green-blind)
#0066CD
Tritanopia (blue-blind)
#007F91
Achromatopsia (no color)
#6C6C6C
Design tokens & code
CSS
--color: #3c66cf; /* rgb */ color: rgb(60, 102, 207); /* oklch */ color: oklch(53.8% 0.169 264.8);
Tailwind
colors: {
custom: {
50: '#8491de',
500: '#3c66cf',
950: '#000000',
},
}SCSS
$custom: #3c66cf; $custom-light: #8491de; $custom-dark: #000000;
JSON
{
"hex": "#3c66cf",
"rgb": {
"r": 60,
"g": 102,
"b": 207
},
"hsl": {
"h": 222.857,
"s": 60.494,
"l": 52.353
},
"oklch": {
"l": 0.53835,
"c": 0.16924,
"h": 264.8
},
"luminance": 0.14968
}Semantic roles & 50–950 ramp
primary
#3C66CF
secondary
#D3C193
accent
#B644E4
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83