#666AE6#666AE6

#666AE6 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.7% C 0.184 H 277.7°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#666AE6
RGB	rgb(102, 106, 230)
HSL	hsl(238, 72%, 65%)
HSV	hsv(238, 56%, 90%)
CMYK	cmyk(55.7%, 53.9%, 0%, 9.8%)
CIE-LAB	lab(50.50, 33.32, -63.66)
CIE-LCH	lch(50.50, 71.85, 297.63°)
OKLab	oklab(58.65% 0.0247 -0.1823)
OKLCH	oklch(58.65% 0.184 277.7)
XYZ	xyz(24.9119, 18.8443, 77.1722)
Luminance	0.1885 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666AE6 #E6E266

analogous

#66AAE6 #666AE6 #A266E6

triadic

#666AE6 #E6666A #6AE666

tetradic

#666AE6 #E666AA #E6E266 #66E6A2

square

#666AE6 #E666AA #E6E266 #66E6A2

split-complementary

#666AE6 #E6A266 #AAE666

monochromatic

#1D22B4 #3137DD #666AE6 #9B9DEF #CFD0F7

Accessibility & contrast

On white

4.40

#666AE6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#666AE6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666AE6

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666AE6	#FFFFFF	#000000	##000000
##666AE6	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#197EEA

Deuteranopia (green-blind)

#0073E3

Tritanopia (blue-blind)

#20879E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #666ae6;
/* rgb */ color: rgb(102, 106, 230);
/* oklch */ color: oklch(58.7% 0.184 277.7);

Tailwind

colors: {
  custom: {
    50: '#9c94ef',
    500: '#666ae6',
    950: '#000000',
  },
}

SCSS

$custom: #666ae6;
$custom-light: #9c94ef;
$custom-dark: #000000;

JSON

{
  "hex": "#666ae6",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 230
  },
  "hsl": {
    "h": 238.125,
    "s": 71.91,
    "l": 65.098
  },
  "oklch": {
    "l": 0.58653,
    "c": 0.18394,
    "h": 277.7
  },
  "luminance": 0.18846
}

Semantic roles & 50–950 ramp

primary

#666AE6

secondary

#EAE8BE

accent

#CE12D4

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #666AE6

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

Preview Lab → · Contrast checker → · Palette generator →