#4B66CF#4B66CF
#4B66CF is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.6% C 0.165 H 269.4°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).
Color values
| HEX | #4B66CF |
|---|---|
| RGB | rgb(75, 102, 207) |
| HSL | hsl(228, 58%, 55%) |
| HSV | hsv(228, 64%, 81%) |
| CMYK | cmyk(63.8%, 50.7%, 0%, 18.8%) |
| CIE-LAB | lab(46.31, 23.30, -57.45) |
| CIE-LCH | lch(46.31, 62.00, 292.08°) |
| OKLab | oklab(54.58% -0.0016 -0.1647) |
| OKLCH | oklch(54.58% 0.165 269.4) |
| XYZ | xyz(18.9117, 15.5019, 61.0149) |
| Luminance | 0.1550 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal Blue
#4169E1
ΔE00 2.64
Cornflower Blue
#5170D7
ΔE00 3.63
Azul
#1D5DEC
ΔE00 4.76
Warm Blue
#4B57DB
ΔE00 5.34
French Blue
#436BAD
ΔE00 5.50
Bright Blue
#0165FC
ΔE00 5.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4B66CF #CFB44B
analogous
#4BA8CF #4B66CF #724BCF
triadic
#4B66CF #CF4B66 #66CF4B
tetradic
#4B66CF #CF4BA8 #CFB44B #4BCF72
square
#4B66CF #CF4BA8 #CFB44B #4BCF72
split-complementary
#4B66CF #CF724B #A8CF4B
monochromatic
#22357E #2E49AE #4B66CF #7B8FDC #ACB8E9
Accessibility & contrast
On white
5.12
#4B66CF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.10
#4B66CF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #4B66CF
5.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4B66CF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4B66CF | 1.00 | 5.12 | 4.10 | 5.12 |
| #FFFFFF | 5.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.10 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2A74D3
Deuteranopia (green-blind)
#0068CD
Tritanopia (blue-blind)
#007E91
Achromatopsia (no color)
#6E6E6E
Design tokens & code
CSS
--color: #4b66cf; /* rgb */ color: rgb(75, 102, 207); /* oklch */ color: oklch(54.6% 0.165 269.4);
Tailwind
colors: {
custom: {
50: '#8a91de',
500: '#4b66cf',
950: '#000000',
},
}SCSS
$custom: #4b66cf; $custom-light: #8a91de; $custom-dark: #000000;
JSON
{
"hex": "#4b66cf",
"rgb": {
"r": 75,
"g": 102,
"b": 207
},
"hsl": {
"h": 227.727,
"s": 57.895,
"l": 55.294
},
"oklch": {
"l": 0.54583,
"c": 0.16472,
"h": 269.4
},
"luminance": 0.15504
}Semantic roles & 50–950 ramp
primary
#4B66CF
secondary
#D6CB9F
accent
#C247E1
background
#F9F8FD
surface
#F1F0FB
border
#CBCBD4
text
#0D0C15
muted
#7E7D83