#666ADE#666ADE

#666ADE is a mid, vivid blue. Relative luminance 0.184; OKLCH L 58.1% C 0.173 H 278.1°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#666ADE
RGB	rgb(102, 106, 222)
HSL	hsl(238, 65%, 64%)
HSV	hsv(238, 54%, 87%)
CMYK	cmyk(54.1%, 52.3%, 0%, 12.9%)
CIE-LAB	lab(49.98, 30.80, -59.98)
CIE-LCH	lch(49.98, 67.43, 297.18°)
OKLab	oklab(58.1% 0.0243 -0.1715)
OKLCH	oklch(58.1% 0.173 278.1)
XYZ	xyz(23.8142, 18.4052, 71.3908)
Luminance	0.1841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666ADE #DEDA66

analogous

#66A6DE #666ADE #9E66DE

triadic

#666ADE #DE666A #6ADE66

tetradic

#666ADE #DE66A6 #DEDA66 #66DE9E

square

#666ADE #DE66A6 #DEDA66 #66DE9E

split-complementary

#666ADE #DE9E66 #A6DE66

monochromatic

#2428A6 #3439D3 #666ADE #989BE9 #CBCCF4

Accessibility & contrast

On white

4.49

#666ADE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#666ADE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666ADE

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666ADE	#FFFFFF	#000000	##000000
##666ADE	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#297CE2

Deuteranopia (green-blind)

#1372DC

Tritanopia (blue-blind)

#2C849A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #666ade;
/* rgb */ color: rgb(102, 106, 222);
/* oklch */ color: oklch(58.1% 0.173 278.1);

Tailwind

colors: {
  custom: {
    50: '#9a94e9',
    500: '#666ade',
    950: '#000000',
  },
}

SCSS

$custom: #666ade;
$custom-light: #9a94e9;
$custom-dark: #000000;

JSON

{
  "hex": "#666ade",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 222
  },
  "hsl": {
    "h": 238,
    "s": 64.516,
    "l": 63.529
  },
  "oklch": {
    "l": 0.58097,
    "c": 0.17319,
    "h": 278.1
  },
  "luminance": 0.18407
}

Semantic roles & 50–950 ramp

primary

#666ADE

secondary

#E5E4BB

accent

#C619CC

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666ADE

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

Preview Lab → · Contrast checker → · Palette generator →