#666AED#666AED

#666AED is a mid, vivid blue. Relative luminance 0.192; OKLCH L 59.2% C 0.193 H 277.4°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#666AED
RGB	rgb(102, 106, 237)
HSL	hsl(238, 79%, 66%)
HSV	hsv(238, 57%, 93%)
CMYK	cmyk(57%, 55.3%, 0%, 7.1%)
CIE-LAB	lab(50.97, 35.54, -66.83)
CIE-LCH	lch(50.97, 75.69, 298.01°)
OKLab	oklab(59.15% 0.0249 -0.1916)
OKLCH	oklch(59.15% 0.193 277.4)
XYZ	xyz(25.9147, 19.2454, 82.4535)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AED #EDE966

analogous

#66AEED #666AED #A666ED

triadic

#666AED #ED666A #6AED66

tetradic

#666AED #ED66AE #EDE966 #66EDA6

square

#666AED #ED66AE #EDE966 #66EDA6

split-complementary

#666AED #EDA666 #AEED66

monochromatic

#171CC2 #2F35E7 #666AED #9D9FF3 #D4D5FA

Accessibility & contrast

On white

4.33

#666AED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#666AED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AED

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AED	#FFFFFF	#000000	##000000
##666AED	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007FF1

Deuteranopia (green-blind)

#0074EA

Tritanopia (blue-blind)

#0E89A1

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666aed;
/* rgb */ color: rgb(102, 106, 237);
/* oklch */ color: oklch(59.2% 0.193 277.4);

Tailwind

colors: {
  custom: {
    50: '#9d94f4',
    500: '#666aed',
    950: '#000000',
  },
}

SCSS

$custom: #666aed;
$custom-light: #9d94f4;
$custom-dark: #000000;

JSON

{
  "hex": "#666aed",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 237
  },
  "hsl": {
    "h": 238.222,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.59151,
    "c": 0.19322,
    "h": 277.4
  },
  "luminance": 0.19247
}

Semantic roles & 50–950 ramp

primary

#666AED

secondary

#EDECC2

accent

#D50ADB

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666AED

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →