#666ADA#666ADA

#666ADA is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.8% C 0.168 H 278.2°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#666ADA
RGB	rgb(102, 106, 218)
HSL	hsl(238, 61%, 63%)
HSV	hsv(238, 53%, 85%)
CMYK	cmyk(53.2%, 51.4%, 0%, 14.5%)
CIE-LAB	lab(49.73, 29.54, -58.13)
CIE-LCH	lch(49.73, 65.20, 296.94°)
OKLab	oklab(57.83% 0.024 -0.166)
OKLCH	oklch(57.83% 0.168 278.2)
XYZ	xyz(23.2844, 18.1933, 68.6008)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ADA #DAD666

analogous

#66A4DA #666ADA #9C66DA

triadic

#666ADA #DA666A #6ADA66

tetradic

#666ADA #DA66A4 #DAD666 #66DA9C

square

#666ADA #DA66A4 #DAD666 #66DA9C

split-complementary

#666ADA #DA9C66 #A4DA66

monochromatic

#262B9F #353ACE #666ADA #979AE6 #C9CAF2

Accessibility & contrast

On white

4.53

#666ADA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#666ADA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666ADA

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ADA	#FFFFFF	#000000	##000000
##666ADA	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F7BDE

Deuteranopia (green-blind)

#1E72D8

Tritanopia (blue-blind)

#318398

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #666ada;
/* rgb */ color: rgb(102, 106, 218);
/* oklch */ color: oklch(57.8% 0.168 278.2);

Tailwind

colors: {
  custom: {
    50: '#9a94e6',
    500: '#666ada',
    950: '#000000',
  },
}

SCSS

$custom: #666ada;
$custom-light: #9a94e6;
$custom-dark: #000000;

JSON

{
  "hex": "#666ada",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 218
  },
  "hsl": {
    "h": 237.931,
    "s": 61.053,
    "l": 62.745
  },
  "oklch": {
    "l": 0.57825,
    "c": 0.16775,
    "h": 278.2
  },
  "luminance": 0.18195
}

Semantic roles & 50–950 ramp

primary

#666ADA

secondary

#E3E1B9

accent

#C31DC9

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #666ADA

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

Preview Lab → · Contrast checker → · Palette generator →