#666AEE#666AEE

#666AEE is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.2% C 0.195 H 277.4°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#666AEE
RGB	rgb(102, 106, 238)
HSL	hsl(238, 80%, 67%)
HSV	hsv(238, 57%, 93%)
CMYK	cmyk(57.1%, 55.5%, 0%, 6.7%)
CIE-LAB	lab(51.04, 35.86, -67.28)
CIE-LCH	lch(51.04, 76.24, 298.06°)
OKLab	oklab(59.22% 0.0249 -0.1929)
OKLCH	oklch(59.22% 0.195 277.4)
XYZ	xyz(26.0612, 19.3040, 83.2251)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AEE #EEEA66

analogous

#66AEEE #666AEE #A666EE

triadic

#666AEE #EE666A #6AEE66

tetradic

#666AEE #EE66AE #EEEA66 #66EEA6

square

#666AEE #EE66AE #EEEA66 #66EEA6

split-complementary

#666AEE #EEA666 #AEEE66

monochromatic

#161BC4 #2F34E8 #666AEE #9DA0F4 #D4D5FA

Accessibility & contrast

On white

4.32

#666AEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#666AEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AEE

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AEE	#FFFFFF	#000000	##000000
##666AEE	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007FF2

Deuteranopia (green-blind)

#0074EB

Tritanopia (blue-blind)

#0A89A2

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #666aee;
/* rgb */ color: rgb(102, 106, 238);
/* oklch */ color: oklch(59.2% 0.195 277.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#666aee",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 238
  },
  "hsl": {
    "h": 238.235,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.59224,
    "c": 0.19453,
    "h": 277.4
  },
  "luminance": 0.19306
}

Semantic roles & 50–950 ramp

primary

#666AEE

secondary

#EEEDC2

accent

#D609DC

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666AEE

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

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