#666ADD#666ADD
#666ADD is a mid, vivid blue. Relative luminance 0.184; OKLCH L 58.0% C 0.172 H 278.1°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).
Color values
| HEX | #666ADD |
|---|---|
| RGB | rgb(102, 106, 221) |
| HSL | hsl(238, 64%, 63%) |
| HSV | hsv(238, 54%, 87%) |
| CMYK | cmyk(53.8%, 52%, 0%, 13.3%) |
| CIE-LAB | lab(49.92, 30.48, -59.52) |
| CIE-LCH | lch(49.92, 66.87, 297.12°) |
| OKLab | oklab(58.03% 0.0242 -0.1701) |
| OKLCH | oklch(58.03% 0.172 278.1) |
| XYZ | xyz(23.6806, 18.3518, 70.6870) |
| Luminance | 0.1835 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark Periwinkle
#665FD1
ΔE00 4.06
Mediumslateblue
#7B68EE
ΔE00 4.57
Cornflower Blue
#5170D7
ΔE00 4.82
Royal Blue
#4169E1
ΔE00 5.40
Slate Blue
#6A5ACD
ΔE00 5.91
Light Indigo
#6D5ACF
ΔE00 5.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#666ADD #DDD966
analogous
#66A5DD #666ADD #9D66DD
triadic
#666ADD #DD666A #6ADD66
tetradic
#666ADD #DD66A5 #DDD966 #66DD9D
square
#666ADD #DD66A5 #DDD966 #66DD9D
split-complementary
#666ADD #DD9D66 #A5DD66
monochromatic
#2429A4 #3439D2 #666ADD #989BE8 #CACCF3
Accessibility & contrast
On white
4.50
#666ADD on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.67
#666ADD on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #666ADD
4.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##666ADD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##666ADD | 1.00 | 4.50 | 4.67 | 4.67 |
| #FFFFFF | 4.50 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.67 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.67 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2B7CE1
Deuteranopia (green-blind)
#1672DB
Tritanopia (blue-blind)
#2D8499
Achromatopsia (no color)
#777777
Design tokens & code
CSS
--color: #666add; /* rgb */ color: rgb(102, 106, 221); /* oklch */ color: oklch(58.0% 0.172 278.1);
Tailwind
colors: {
custom: {
50: '#9a94e8',
500: '#666add',
950: '#000000',
},
}SCSS
$custom: #666add; $custom-light: #9a94e8; $custom-dark: #000000;
JSON
{
"hex": "#666add",
"rgb": {
"r": 102,
"g": 106,
"b": 221
},
"hsl": {
"h": 237.983,
"s": 63.636,
"l": 63.333
},
"oklch": {
"l": 0.58029,
"c": 0.17183,
"h": 278.1
},
"luminance": 0.18353
}Semantic roles & 50–950 ramp
primary
#666ADD
secondary
#E5E3BA
accent
#C51ACB
background
#FAF9FE
surface
#F3F1FD
border
#CDCBD5
text
#0F0D16
muted
#7F7E84