#6663F7#6663F7

#6663F7 is a mid, highly saturated blue. Relative luminance 0.185; OKLCH L 58.7% C 0.215 H 278.4°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#6663F7
RGB	rgb(102, 99, 247)
HSL	hsl(241, 90%, 68%)
HSV	hsv(241, 60%, 97%)
CMYK	cmyk(58.7%, 59.9%, 0%, 3.1%)
CIE-LAB	lab(50.05, 42.86, -73.91)
CIE-LCH	lch(50.05, 85.43, 300.11°)
OKLab	oklab(58.69% 0.0313 -0.2125)
OKLCH	oklch(58.69% 0.215 278.4)
XYZ	xyz(26.7245, 18.4619, 90.1329)
Luminance	0.1846 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663F7 #F4F763

analogous

#63AAF7 #6663F7 #B063F7

triadic

#6663F7 #F76663 #63F766

tetradic

#6663F7 #F763AA #F4F763 #63F7B0

square

#6663F7 #F763AA #F4F763 #63F7B0

split-complementary

#6663F7 #F7B063 #AAF763

monochromatic

#0F0BD5 #2D29F4 #6663F7 #9F9DFA #D8D7FD

Accessibility & contrast

On white

4.47

#6663F7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#6663F7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6663F7

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663F7	#FFFFFF	#000000	##000000
##6663F7	1.00	4.47	4.69	4.69
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007DFC

Deuteranopia (green-blind)

#0071F4

Tritanopia (blue-blind)

#0087A4

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #6663f7;
/* rgb */ color: rgb(102, 99, 247);
/* oklch */ color: oklch(58.7% 0.215 278.4);

Tailwind

colors: {
  custom: {
    50: '#9e90fb',
    500: '#6663f7',
    950: '#000000',
  },
}

SCSS

$custom: #6663f7;
$custom-light: #9e90fb;
$custom-dark: #000000;

JSON

{
  "hex": "#6663f7",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 247
  },
  "hsl": {
    "h": 241.216,
    "s": 90.244,
    "l": 67.843
  },
  "oklch": {
    "l": 0.58692,
    "c": 0.21477,
    "h": 278.4
  },
  "luminance": 0.18464
}

Semantic roles & 50–950 ramp

primary

#6663F7

secondary

#F1F2C4

accent

#E600E1

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #6663F7

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

Preview Lab → · Contrast checker → · Palette generator →