#666AF9#666AF9
#666AF9 is a mid, highly saturated blue. Relative luminance 0.200; OKLCH L 60.0% C 0.209 H 276.9°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #666AF9 |
|---|---|
| RGB | rgb(102, 106, 249) |
| HSL | hsl(238, 92%, 69%) |
| HSV | hsv(238, 59%, 98%) |
| CMYK | cmyk(59%, 57.4%, 0%, 2.4%) |
| CIE-LAB | lab(51.80, 39.35, -72.17) |
| CIE-LCH | lch(51.80, 82.20, 298.60°) |
| OKLab | oklab(60.03% 0.025 -0.2073) |
| OKLCH | oklch(60.03% 0.209 276.9) |
| XYZ | xyz(27.7269, 19.9703, 91.9977) |
| Luminance | 0.1997 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Mediumslateblue
#7B68EE
ΔE00 3.72
Cornflower
#6A79F7
ΔE00 4.66
Cornflower Blue
#5170D7
ΔE00 6.56
Royal Blue
#4169E1
ΔE00 6.61
Dark Periwinkle
#665FD1
ΔE00 6.66
Bright Blue
#0165FC
ΔE00 7.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#666AF9 #F9F566
analogous
#66B4F9 #666AF9 #AC66F9
triadic
#666AF9 #F9666A #6AF966
tetradic
#666AF9 #F966B4 #F9F566 #66F9AC
square
#666AF9 #F966B4 #F9F566 #66F9AC
split-complementary
#666AF9 #F9AC66 #B4F966
monochromatic
#090EDC #2B31F7 #666AF9 #A1A3FB #DCDDFE
Accessibility & contrast
On white
4.20
#666AF9 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.99
#666AF9 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #666AF9
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##666AF9 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##666AF9 | 1.00 | 4.20 | 4.99 | 4.99 |
| #FFFFFF | 4.20 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0082FE
Deuteranopia (green-blind)
#0075F6
Tritanopia (blue-blind)
#008CA7
Achromatopsia (no color)
#7B7B7B
Design tokens & code
CSS
--color: #666af9; /* rgb */ color: rgb(102, 106, 249); /* oklch */ color: oklch(60.0% 0.209 276.9);
Tailwind
colors: {
custom: {
50: '#9e94fc',
500: '#666af9',
950: '#000000',
},
}SCSS
$custom: #666af9; $custom-light: #9e94fc; $custom-dark: #000000;
JSON
{
"hex": "#666af9",
"rgb": {
"r": 102,
"g": 106,
"b": 249
},
"hsl": {
"h": 238.367,
"s": 92.453,
"l": 68.824
},
"oklch": {
"l": 0.60031,
"c": 0.20884,
"h": 276.9
},
"luminance": 0.19972
}Semantic roles & 50–950 ramp
primary
#666AF9
secondary
#F3F2C8
accent
#DF00E6
background
#FAF9FF
surface
#F4F1FF
border
#CECBD7
text
#100D18
muted
#7F7E86