#666FEC#666FEC
#666FEC is a mid, vivid blue. Relative luminance 0.203; OKLCH L 60.0% C 0.186 H 276.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).
Color values
| HEX | #666FEC |
|---|---|
| RGB | rgb(102, 111, 236) |
| HSL | hsl(236, 78%, 66%) |
| HSV | hsv(236, 57%, 93%) |
| CMYK | cmyk(56.8%, 53%, 0%, 7.5%) |
| CIE-LAB | lab(52.12, 32.21, -64.42) |
| CIE-LCH | lch(52.12, 72.02, 296.57°) |
| OKLab | oklab(59.98% 0.0199 -0.1845) |
| OKLCH | oklch(59.98% 0.186 276.2) |
| XYZ | xyz(26.2994, 20.2479, 81.8630) |
| Luminance | 0.2025 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 3.54
Mediumslateblue
#7B68EE
ΔE00 4.51
Cornflower Blue
#5170D7
ΔE00 4.91
Royal Blue
#4169E1
ΔE00 5.80
Dark Periwinkle
#665FD1
ΔE00 6.60
Lightish Blue
#3D7AFD
ΔE00 7.06
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#666FEC #ECE366
analogous
#66B2EC #666FEC #A066EC
triadic
#666FEC #EC666F #6FEC66
tetradic
#666FEC #EC66B2 #ECE366 #66ECA0
square
#666FEC #EC66B2 #ECE366 #66ECA0
split-complementary
#666FEC #ECA066 #B2EC66
monochromatic
#1823C0 #303CE5 #666FEC #9CA2F3 #D3D5FA
Accessibility & contrast
On white
4.16
#666FEC on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.05
#666FEC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #666FEC
5.05:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##666FEC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##666FEC | 1.00 | 4.16 | 5.05 | 5.05 |
| #FFFFFF | 4.16 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.05 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.05 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2282F0
Deuteranopia (green-blind)
#0077E9
Tritanopia (blue-blind)
#0F8CA3
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #666fec; /* rgb */ color: rgb(102, 111, 236); /* oklch */ color: oklch(60.0% 0.186 276.2);
Tailwind
colors: {
custom: {
50: '#9c98f3',
500: '#666fec',
950: '#000000',
},
}SCSS
$custom: #666fec; $custom-light: #9c98f3; $custom-dark: #000000;
JSON
{
"hex": "#666fec",
"rgb": {
"r": 102,
"g": 111,
"b": 236
},
"hsl": {
"h": 235.97,
"s": 77.907,
"l": 66.275
},
"oklch": {
"l": 0.59984,
"c": 0.18555,
"h": 276.2
},
"luminance": 0.2025
}Semantic roles & 50–950 ramp
primary
#666FEC
secondary
#EDEAC1
accent
#CC0BDA
background
#FAF9FE
surface
#F4F2FD
border
#CECCD5
text
#0F0D17
muted
#7F7E85