#666EEC#666EEC
#666EEC is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.8% C 0.187 H 276.4°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).
Color values
| HEX | #666EEC |
|---|---|
| RGB | rgb(102, 110, 236) |
| HSL | hsl(236, 78%, 66%) |
| HSV | hsv(236, 57%, 93%) |
| CMYK | cmyk(56.8%, 53.4%, 0%, 7.5%) |
| CIE-LAB | lab(51.87, 32.82, -64.81) |
| CIE-LCH | lch(51.87, 72.65, 296.85°) |
| OKLab | oklab(59.8% 0.0209 -0.1856) |
| OKLCH | oklch(59.8% 0.187 276.4) |
| XYZ | xyz(26.1909, 20.0309, 81.8268) |
| Luminance | 0.2003 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 3.83
Mediumslateblue
#7B68EE
ΔE00 4.31
Cornflower Blue
#5170D7
ΔE00 5.00
Royal Blue
#4169E1
ΔE00 5.76
Dark Periwinkle
#665FD1
ΔE00 6.33
Lightish Blue
#3D7AFD
ΔE00 7.30
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#666EEC #ECE466
analogous
#66B1EC #666EEC #A166EC
triadic
#666EEC #EC666E #6EEC66
tetradic
#666EEC #EC66B1 #ECE466 #66ECA1
square
#666EEC #EC66B1 #ECE466 #66ECA1
split-complementary
#666EEC #ECA166 #B1EC66
monochromatic
#1822C0 #303AE5 #666EEC #9CA2F3 #D3D5FA
Accessibility & contrast
On white
4.19
#666EEC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.01
#666EEC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #666EEC
5.01:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##666EEC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##666EEC | 1.00 | 4.19 | 5.01 | 5.01 |
| #FFFFFF | 4.19 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.01 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.01 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1D81F0
Deuteranopia (green-blind)
#0076E9
Tritanopia (blue-blind)
#0F8BA2
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #666eec; /* rgb */ color: rgb(102, 110, 236); /* oklch */ color: oklch(59.8% 0.187 276.4);
Tailwind
colors: {
custom: {
50: '#9c97f3',
500: '#666eec',
950: '#000000',
},
}SCSS
$custom: #666eec; $custom-light: #9c97f3; $custom-dark: #000000;
JSON
{
"hex": "#666eec",
"rgb": {
"r": 102,
"g": 110,
"b": 236
},
"hsl": {
"h": 236.418,
"s": 77.907,
"l": 66.275
},
"oklch": {
"l": 0.59801,
"c": 0.18682,
"h": 276.4
},
"luminance": 0.20033
}Semantic roles & 50–950 ramp
primary
#666EEC
secondary
#EDEAC1
accent
#CE0BDA
background
#FAF9FE
surface
#F4F2FD
border
#CECCD5
text
#0F0D17
muted
#7F7E85