#6B66DB#6B66DB

#6B66DB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.5% C 0.174 H 281.4°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX#6B66DB
RGBrgb(107, 102, 219)
HSLhsl(243, 62%, 63%)
HSVhsv(243, 53%, 86%)
CMYKcmyk(51.1%, 53.4%, 0%, 14.1%)
CIE-LABlab(49.18, 33.30, -59.56)
CIE-LCHlch(49.18, 68.24, 299.21°)
OKLaboklab(57.53% 0.0342 -0.1701)
OKLCHoklch(57.53% 0.174 281.4)
XYZxyz(23.5970, 17.7417, 69.1852)
Luminance0.1774 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#6B66DB #D6DB66
analogous
#669BDB #6B66DB #A566DB
triadic
#6B66DB #DB6B66 #66DB6B
tetradic
#6B66DB #DB669B #D6DB66 #66DBA5
square
#6B66DB #DB669B #D6DB66 #66DBA5
split-complementary
#6B66DB #DBA566 #9BDB66
monochromatic
#2B26A1 #3B34CF #6B66DB #9B98E7 #CBC9F2

Accessibility & contrast

On white

4.62
#6B66DB on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.55
#6B66DB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6B66DB
4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##6B66DB#FFFFFF#000000##FFFFFF
##6B66DB1.004.624.554.62
#FFFFFF4.621.0021.001.00
#0000004.5521.001.0021.00
##FFFFFF4.621.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2379DF
Deuteranopia (green-blind)
#1471D9
Tritanopia (blue-blind)
#3E8097
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #6b66db;
/* rgb */ color: rgb(107, 102, 219);
/* oklch */ color: oklch(57.5% 0.174 281.4);
Tailwind
colors: {
  custom: {
    50: '#9d91e7',
    500: '#6b66db',
    950: '#000000',
  },
}
SCSS
$custom: #6b66db;
$custom-light: #9d91e7;
$custom-dark: #000000;
JSON
{
  "hex": "#6b66db",
  "rgb": {
    "r": 107,
    "g": 102,
    "b": 219
  },
  "hsl": {
    "h": 242.564,
    "s": 61.905,
    "l": 62.941
  },
  "oklch": {
    "l": 0.57528,
    "c": 0.17354,
    "h": 281.4
  },
  "luminance": 0.17743
}

Semantic roles & 50–950 ramp

primary
#6B66DB
secondary
#E2E3B9
accent
#CA1CC2
background
#FAF8FE
surface
#F4F0FC
border
#CECBD5
text
#0F0D16
muted
#7F7D84

Preview Lab

Preview with #6B66DB

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

Preview Lab → · Contrast checker → · Palette generator →

#6B66DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva