#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
RGBrgb(102, 102, 243)
HSLhsl(240, 85%, 68%)
HSVhsv(240, 58%, 95%)
CMYKcmyk(58%, 58%, 0%, 4.7%)
CIE-LABlab(50.45, 39.83, -71.03)
CIE-LCHlch(50.45, 81.44, 299.28°)
OKLaboklab(58.89% 0.0287 -0.204)
OKLCHoklch(58.89% 0.206 278)
XYZxyz(26.4034, 18.7967, 87.0134)
Luminance0.1880 (WCAG relative)
Temperaturecool
Familyblue

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
##6666F31.004.414.764.76
#FFFFFF4.411.0021.0021.00
#0000004.7621.001.001.00
##0000004.7621.001.001.00

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 →

#6666F3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva