#6663E7#6663E7

#6663E7 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 57.5% C 0.194 H 279.4°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#6663E7
RGB	rgb(102, 99, 231)
HSL	hsl(241, 73%, 65%)
HSV	hsv(241, 57%, 91%)
CMYK	cmyk(55.8%, 57.1%, 0%, 9.4%)
CIE-LAB	lab(48.90, 37.84, -66.81)
CIE-LCH	lch(48.90, 76.78, 299.53°)
OKLab	oklab(57.48% 0.0316 -0.1916)
OKLCH	oklch(57.48% 0.194 279.4)
XYZ	xyz(24.3606, 17.5164, 77.6831)
Luminance	0.1752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663E7 #E4E763

analogous

#63A2E7 #6663E7 #A863E7

triadic

#6663E7 #E76663 #63E766

tetradic

#6663E7 #E763A2 #E4E763 #63E7A8

square

#6663E7 #E763A2 #E4E763 #63E7A8

split-complementary

#6663E7 #E7A863 #A2E763

monochromatic

#1F1CB4 #322EDF #6663E7 #9A98EF #CECDF7

Accessibility & contrast

On white

4.66

#6663E7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#6663E7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6663E7

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663E7	#FFFFFF	#000000	##FFFFFF
##6663E7	1.00	4.66	4.50	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0079EB

Deuteranopia (green-blind)

#006FE4

Tritanopia (blue-blind)

#20829B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #6663e7;
/* rgb */ color: rgb(102, 99, 231);
/* oklch */ color: oklch(57.5% 0.194 279.4);

Tailwind

colors: {
  custom: {
    50: '#9c8fef',
    500: '#6663e7',
    950: '#000000',
  },
}

SCSS

$custom: #6663e7;
$custom-light: #9c8fef;
$custom-dark: #000000;

JSON

{
  "hex": "#6663e7",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 231
  },
  "hsl": {
    "h": 241.364,
    "s": 73.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.57484,
    "c": 0.1942,
    "h": 279.4
  },
  "luminance": 0.17518
}

Semantic roles & 50–950 ramp

primary

#6663E7

secondary

#E9EABC

accent

#D510D1

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #6663E7

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

Preview Lab → · Contrast checker → · Palette generator →