#6663EE#6663EE

#6663EE is a mid, highly saturated blue. Relative luminance 0.179; OKLCH L 58.0% C 0.203 H 278.9°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX#6663EE
RGBrgb(102, 99, 238)
HSLhsl(241, 80%, 66%)
HSVhsv(241, 58%, 93%)
CMYKcmyk(57.1%, 58.4%, 0%, 6.7%)
CIE-LABlab(49.40, 40.04, -69.94)
CIE-LCHlch(49.40, 80.59, 299.79°)
OKLaboklab(58.01% 0.0316 -0.2008)
OKLCHoklch(58.01% 0.203 278.9)
XYZxyz(25.3691, 17.9197, 82.9944)
Luminance0.1792 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#6663EE #EBEE63
analogous
#63A5EE #6663EE #AB63EE
triadic
#6663EE #EE6663 #63EE66
tetradic
#6663EE #EE63A5 #EBEE63 #63EEAB
square
#6663EE #EE63A5 #EBEE63 #63EEAB
split-complementary
#6663EE #EEAB63 #A5EE63
monochromatic
#1915C2 #302CE8 #6663EE #9C9AF4 #D2D1FA

Accessibility & contrast

On white

4.58
#6663EE on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.58
#6663EE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6663EE
4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##6663EE#FFFFFF#000000##000000
##6663EE1.004.584.584.58
#FFFFFF4.581.0021.0021.00
#0000004.5821.001.001.00
##0000004.5821.001.001.00

Color blindness preview

Protanopia (red-blind)
#007BF3
Deuteranopia (green-blind)
#0070EB
Tritanopia (blue-blind)
#0E849F
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #6663ee;
/* rgb */ color: rgb(102, 99, 238);
/* oklch */ color: oklch(58.0% 0.203 278.9);
Tailwind
colors: {
  custom: {
    50: '#9d8ff4',
    500: '#6663ee',
    950: '#000000',
  },
}
SCSS
$custom: #6663ee;
$custom-light: #9d8ff4;
$custom-dark: #000000;
JSON
{
  "hex": "#6663ee",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 238
  },
  "hsl": {
    "h": 241.295,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.58006,
    "c": 0.20328,
    "h": 278.9
  },
  "luminance": 0.17922
}

Semantic roles & 50–950 ramp

primary
#6663EE
secondary
#ECEDC0
accent
#DD09D8
background
#FAF8FF
surface
#F4F0FE
border
#CECBD6
text
#0F0C17
muted
#7F7D85

Preview Lab

Preview with #6663EE

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

Preview Lab → · Contrast checker → · Palette generator →

#6663EE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva