#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
RGB	rgb(102, 99, 238)
HSL	hsl(241, 80%, 66%)
HSV	hsv(241, 58%, 93%)
CMYK	cmyk(57.1%, 58.4%, 0%, 6.7%)
CIE-LAB	lab(49.40, 40.04, -69.94)
CIE-LCH	lch(49.40, 80.59, 299.79°)
OKLab	oklab(58.01% 0.0316 -0.2008)
OKLCH	oklch(58.01% 0.203 278.9)
XYZ	xyz(25.3691, 17.9197, 82.9944)
Luminance	0.1792 (WCAG relative)
Temperature	cool
Family	blue

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
##6663EE	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

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 →