#666AFB#666AFB
#666AFB is a mid, highly saturated blue. Relative luminance 0.201; OKLCH L 60.2% C 0.211 H 276.8°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).
Color values
| HEX | #666AFB |
|---|---|
| RGB | rgb(102, 106, 251) |
| HSL | hsl(238, 95%, 69%) |
| HSV | hsv(238, 59%, 98%) |
| CMYK | cmyk(59.4%, 57.8%, 0%, 1.6%) |
| CIE-LAB | lab(51.95, 39.99, -73.05) |
| CIE-LCH | lch(51.95, 83.28, 298.69°) |
| OKLab | oklab(60.18% 0.025 -0.2099) |
| OKLCH | oklch(60.18% 0.211 276.8) |
| XYZ | xyz(28.0405, 20.0958, 93.6493) |
| Luminance | 0.2010 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Mediumslateblue
#7B68EE
ΔE00 3.78
Cornflower
#6A79F7
ΔE00 4.65
Cornflower Blue
#5170D7
ΔE00 6.74
Royal Blue
#4169E1
ΔE00 6.76
Dark Periwinkle
#665FD1
ΔE00 6.88
Bright Blue
#0165FC
ΔE00 7.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#666AFB #FBF766
analogous
#66B5FB #666AFB #AD66FB
triadic
#666AFB #FB666A #6AFB66
tetradic
#666AFB #FB66B5 #FBF766 #66FBAD
square
#666AFB #FB66B5 #FBF766 #66FBAD
split-complementary
#666AFB #FBAD66 #B5FB66
monochromatic
#060CE1 #2A30F9 #666AFB #A2A4FD #DDDEFE
Accessibility & contrast
On white
4.18
#666AFB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.02
#666AFB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #666AFB
5.02:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##666AFB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##666AFB | 1.00 | 4.18 | 5.02 | 5.02 |
| #FFFFFF | 4.18 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.02 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.02 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0082FF
Deuteranopia (green-blind)
#0076F8
Tritanopia (blue-blind)
#008DA8
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #666afb; /* rgb */ color: rgb(102, 106, 251); /* oklch */ color: oklch(60.2% 0.211 276.8);
Tailwind
colors: {
custom: {
50: '#9f94fe',
500: '#666afb',
950: '#000000',
},
}SCSS
$custom: #666afb; $custom-light: #9f94fe; $custom-dark: #000000;
JSON
{
"hex": "#666afb",
"rgb": {
"r": 102,
"g": 106,
"b": 251
},
"hsl": {
"h": 238.389,
"s": 94.904,
"l": 69.216
},
"oklch": {
"l": 0.60181,
"c": 0.21141,
"h": 276.8
},
"luminance": 0.20098
}Semantic roles & 50–950 ramp
primary
#666AFB
secondary
#F4F3C9
accent
#DF00E6
background
#FAF9FF
surface
#F4F1FF
border
#CECBD7
text
#100D18
muted
#7F7E86