#4066CF#4066CF
#4066CF is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.0% C 0.168 H 266.0°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).
Color values
| HEX | #4066CF |
|---|---|
| RGB | rgb(64, 102, 207) |
| HSL | hsl(224, 60%, 53%) |
| HSV | hsv(224, 69%, 81%) |
| CMYK | cmyk(69.1%, 50.7%, 0%, 18.8%) |
| CIE-LAB | lab(45.77, 21.56, -58.36) |
| CIE-LCH | lch(45.77, 62.22, 290.28°) |
| OKLab | oklab(54.02% -0.0118 -0.1676) |
| OKLCH | oklch(54.02% 0.168 266) |
| XYZ | xyz(18.1243, 15.0959, 60.9780) |
| Luminance | 0.1510 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal Blue
#4169E1
ΔE00 2.55
Cornflower Blue
#5170D7
ΔE00 4.00
Azul
#1D5DEC
ΔE00 4.33
French Blue
#436BAD
ΔE00 4.64
Bright Blue
#0165FC
ΔE00 5.03
Cerulean Blue
#056EEE
ΔE00 5.27
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4066CF #CFA940
analogous
#40ADCF #4066CF #6140CF
triadic
#4066CF #CF4066 #66CF40
tetradic
#4066CF #CF40AD #CFA940 #40CF61
square
#4066CF #CF40AD #CFA940 #40CF61
split-complementary
#4066CF #CF6140 #ADCF40
monochromatic
#1E3577 #2A4BA8 #4066CF #718DDB #A2B4E8
Accessibility & contrast
On white
5.22
#4066CF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.02
#4066CF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #4066CF
5.22:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4066CF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4066CF | 1.00 | 5.22 | 4.02 | 5.22 |
| #FFFFFF | 5.22 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.02 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.22 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2773D3
Deuteranopia (green-blind)
#0066CD
Tritanopia (blue-blind)
#007F91
Achromatopsia (no color)
#6C6C6C
Design tokens & code
CSS
--color: #4066cf; /* rgb */ color: rgb(64, 102, 207); /* oklch */ color: oklch(54.0% 0.168 266.0);
Tailwind
colors: {
custom: {
50: '#8591de',
500: '#4066cf',
950: '#000000',
},
}SCSS
$custom: #4066cf; $custom-light: #8591de; $custom-dark: #000000;
JSON
{
"hex": "#4066cf",
"rgb": {
"r": 64,
"g": 102,
"b": 207
},
"hsl": {
"h": 224.056,
"s": 59.833,
"l": 53.137
},
"oklch": {
"l": 0.54018,
"c": 0.16804,
"h": 266
},
"luminance": 0.15098
}Semantic roles & 50–950 ramp
primary
#4066CF
secondary
#D4C497
accent
#B945E3
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83