#666AE7#666AE7

#666AE7 is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.7% C 0.185 H 277.7°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#666AE7
RGB	rgb(102, 106, 231)
HSL	hsl(238, 73%, 65%)
HSV	hsv(238, 56%, 91%)
CMYK	cmyk(55.8%, 54.1%, 0%, 9.4%)
CIE-LAB	lab(50.57, 33.64, -64.11)
CIE-LCH	lch(50.57, 72.40, 297.69°)
OKLab	oklab(58.72% 0.0247 -0.1836)
OKLCH	oklch(58.72% 0.185 277.7)
XYZ	xyz(25.0527, 18.9007, 77.9138)
Luminance	0.1890 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AE7 #E7E366

analogous

#66AAE7 #666AE7 #A366E7

triadic

#666AE7 #E7666A #6AE766

tetradic

#666AE7 #E766AA #E7E366 #66E7A3

square

#666AE7 #E766AA #E7E366 #66E7A3

split-complementary

#666AE7 #E7A366 #AAE766

monochromatic

#1D21B6 #3136DF #666AE7 #9B9EEF #D0D1F8

Accessibility & contrast

On white

4.39

#666AE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#666AE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AE7

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AE7	#FFFFFF	#000000	##000000
##666AE7	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#167EEB

Deuteranopia (green-blind)

#0073E4

Tritanopia (blue-blind)

#1E879E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #666ae7;
/* rgb */ color: rgb(102, 106, 231);
/* oklch */ color: oklch(58.7% 0.185 277.7);

Tailwind

colors: {
  custom: {
    50: '#9c94ef',
    500: '#666ae7',
    950: '#000000',
  },
}

SCSS

$custom: #666ae7;
$custom-light: #9c94ef;
$custom-dark: #000000;

JSON

{
  "hex": "#666ae7",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 231
  },
  "hsl": {
    "h": 238.14,
    "s": 72.881,
    "l": 65.294
  },
  "oklch": {
    "l": 0.58724,
    "c": 0.18528,
    "h": 277.7
  },
  "luminance": 0.18902
}

Semantic roles & 50–950 ramp

primary

#666AE7

secondary

#EAE9BF

accent

#CF11D5

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666AE7

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

Preview Lab → · Contrast checker → · Palette generator →