#4666DD#4666DD
#4666DD is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.3% C 0.185 H 268.4°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #4666DD |
|---|---|
| RGB | rgb(70, 102, 221) |
| HSL | hsl(227, 69%, 57%) |
| HSV | hsv(227, 68%, 87%) |
| CMYK | cmyk(68.3%, 53.8%, 0%, 13.3%) |
| CIE-LAB | lab(47.01, 27.42, -64.32) |
| CIE-LCH | lch(47.01, 69.92, 293.09°) |
| OKLab | oklab(55.34% -0.0053 -0.185) |
| OKLCH | oklch(55.34% 0.185 268.4) |
| XYZ | xyz(20.3238, 16.0233, 70.4143) |
| Luminance | 0.1603 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Royal Blue
#4169E1
ΔE00 1.36
Cornflower Blue
#5170D7
ΔE00 3.48
Azul
#1D5DEC
ΔE00 3.72
Bright Blue
#0165FC
ΔE00 4.00
Warm Blue
#4B57DB
ΔE00 5.17
Cerulean Blue
#056EEE
ΔE00 5.38
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4666DD #DDBD46
analogous
#46B1DD #4666DD #7246DD
triadic
#4666DD #DD4666 #66DD46
tetradic
#4666DD #DD46B1 #DDBD46 #46DD72
square
#4666DD #DD46B1 #DDBD46 #46DD72
split-complementary
#4666DD #DD7246 #B1DD46
monochromatic
#1A338E #2445C2 #4666DD #7A91E7 #ADBCF0
Accessibility & contrast
On white
4.99
#4666DD on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.20
#4666DD on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #4666DD
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4666DD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4666DD | 1.00 | 4.99 | 4.20 | 4.99 |
| #FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.20 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0377E1
Deuteranopia (green-blind)
#0069DB
Tritanopia (blue-blind)
#008398
Achromatopsia (no color)
#6F6F6F
Design tokens & code
CSS
--color: #4666dd; /* rgb */ color: rgb(70, 102, 221); /* oklch */ color: oklch(55.3% 0.185 268.4);
Tailwind
colors: {
custom: {
50: '#8b91e8',
500: '#4666dd',
950: '#000000',
},
}SCSS
$custom: #4666dd; $custom-light: #8b91e8; $custom-dark: #000000;
JSON
{
"hex": "#4666dd",
"rgb": {
"r": 70,
"g": 102,
"b": 221
},
"hsl": {
"h": 227.285,
"s": 68.95,
"l": 57.059
},
"oklch": {
"l": 0.55337,
"c": 0.18512,
"h": 268.4
},
"luminance": 0.16025
}Semantic roles & 50–950 ramp
primary
#4666DD
secondary
#DED1A1
accent
#C73CEC
background
#F9F8FE
surface
#F1F0FD
border
#CBCBD5
text
#0D0C16
muted
#7E7D84