#666DED#666DED

#666DED is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.7% C 0.189 H 276.7°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#666DED
RGB	rgb(102, 109, 237)
HSL	hsl(237, 79%, 66%)
HSV	hsv(237, 57%, 93%)
CMYK	cmyk(57%, 54%, 0%, 7.1%)
CIE-LAB	lab(51.70, 33.74, -65.66)
CIE-LCH	lch(51.70, 73.82, 297.20°)
OKLab	oklab(59.69% 0.022 -0.1882)
OKLCH	oklch(59.69% 0.189 276.7)
XYZ	xyz(26.2293, 19.8746, 82.5584)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666DED #EDE666

analogous

#66B1ED #666DED #A366ED

triadic

#666DED #ED666D #6DED66

tetradic

#666DED #ED66B1 #EDE666 #66EDA3

square

#666DED #ED66B1 #EDE666 #66EDA3

split-complementary

#666DED #EDA366 #B1ED66

monochromatic

#1720C2 #2F39E7 #666DED #9DA1F3 #D4D6FA

Accessibility & contrast

On white

4.22

#666DED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#666DED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666DED

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666DED	#FFFFFF	#000000	##000000
##666DED	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1581F1

Deuteranopia (green-blind)

#0076EA

Tritanopia (blue-blind)

#0C8BA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666ded;
/* rgb */ color: rgb(102, 109, 237);
/* oklch */ color: oklch(59.7% 0.189 276.7);

Tailwind

colors: {
  custom: {
    50: '#9c96f4',
    500: '#666ded',
    950: '#000000',
  },
}

SCSS

$custom: #666ded;
$custom-light: #9c96f4;
$custom-dark: #000000;

JSON

{
  "hex": "#666ded",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 237
  },
  "hsl": {
    "h": 236.889,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.5969,
    "c": 0.18943,
    "h": 276.7
  },
  "luminance": 0.19876
}

Semantic roles & 50–950 ramp

primary

#666DED

secondary

#EDEBC2

accent

#D00ADB

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666DED

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

Preview Lab → · Contrast checker → · Palette generator →