#666CED#666CED

#666CED is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.5% C 0.191 H 276.9°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#666CED
RGB	rgb(102, 108, 237)
HSL	hsl(237, 79%, 66%)
HSV	hsv(237, 57%, 93%)
CMYK	cmyk(57%, 54.4%, 0%, 7.1%)
CIE-LAB	lab(51.45, 34.34, -66.05)
CIE-LCH	lch(51.45, 74.44, 297.47°)
OKLab	oklab(59.51% 0.0229 -0.1893)
OKLCH	oklch(59.51% 0.191 276.9)
XYZ	xyz(26.1232, 19.6625, 82.5230)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666CED #EDE766

analogous

#66B0ED #666CED #A466ED

triadic

#666CED #ED666C #6CED66

tetradic

#666CED #ED66B0 #EDE766 #66EDA4

square

#666CED #ED66B0 #EDE766 #66EDA4

split-complementary

#666CED #EDA466 #B0ED66

monochromatic

#171EC2 #2F37E7 #666CED #9DA1F3 #D4D5FA

Accessibility & contrast

On white

4.26

#666CED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#666CED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666CED

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666CED	#FFFFFF	#000000	##000000
##666CED	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F80F1

Deuteranopia (green-blind)

#0075EA

Tritanopia (blue-blind)

#0D8AA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #666ced;
/* rgb */ color: rgb(102, 108, 237);
/* oklch */ color: oklch(59.5% 0.191 276.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#666ced",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 237
  },
  "hsl": {
    "h": 237.333,
    "s": 78.947,
    "l": 66.471
  },
  "oklch": {
    "l": 0.5951,
    "c": 0.19069,
    "h": 276.9
  },
  "luminance": 0.19664
}

Semantic roles & 50–950 ramp

primary

#666CED

secondary

#EDEBC2

accent

#D20ADB

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666CED

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

Preview Lab → · Contrast checker → · Palette generator →