#6666F3#6666F3

#6666F3 is a mid, highly saturated blue. Relative luminance 0.188; OKLCH L 58.9% C 0.206 H 278.0°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#6666F3
RGB	rgb(102, 102, 243)
HSL	hsl(240, 85%, 68%)
HSV	hsv(240, 58%, 95%)
CMYK	cmyk(58%, 58%, 0%, 4.7%)
CIE-LAB	lab(50.45, 39.83, -71.03)
CIE-LCH	lch(50.45, 81.44, 299.28°)
OKLab	oklab(58.89% 0.0287 -0.204)
OKLCH	oklch(58.89% 0.206 278)
XYZ	xyz(26.4034, 18.7967, 87.0134)
Luminance	0.1880 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6666F3 #F3F366

analogous

#66ACF3 #6666F3 #AC66F3

triadic

#6666F3 #F36666 #66F366

tetradic

#6666F3 #F366AC #F3F366 #66F3AC

square

#6666F3 #F366AC #F3F366 #66F3AC

split-complementary

#6666F3 #F3AC66 #ACF366

monochromatic

#1010CE #2D2DEF #6666F3 #9F9FF7 #D7D7FC

Accessibility & contrast

On white

4.41

#6666F3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#6666F3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6666F3

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6666F3	#FFFFFF	#000000	##000000
##6666F3	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007EF8

Deuteranopia (green-blind)

#0072F0

Tritanopia (blue-blind)

#0088A3

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #6666f3;
/* rgb */ color: rgb(102, 102, 243);
/* oklch */ color: oklch(58.9% 0.206 278.0);

Tailwind

colors: {
  custom: {
    50: '#9e92f8',
    500: '#6666f3',
    950: '#000000',
  },
}

SCSS

$custom: #6666f3;
$custom-light: #9e92f8;
$custom-dark: #000000;

JSON

{
  "hex": "#6666f3",
  "rgb": {
    "r": 102,
    "g": 102,
    "b": 243
  },
  "hsl": {
    "h": 240,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.58894,
    "c": 0.20602,
    "h": 278
  },
  "luminance": 0.18799
}

Semantic roles & 50–950 ramp

primary

#6666F3

secondary

#F0F0C5

accent

#E204E2

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100D17

muted

#7F7D85

Preview Lab

Preview with #6666F3

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

Preview Lab → · Contrast checker → · Palette generator →