#6663E9#6663E9

#6663E9 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 57.6% C 0.197 H 279.2°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#6663E9
RGB	rgb(102, 99, 233)
HSL	hsl(241, 75%, 65%)
HSV	hsv(241, 58%, 91%)
CMYK	cmyk(56.2%, 57.5%, 0%, 8.6%)
CIE-LAB	lab(49.04, 38.47, -67.71)
CIE-LCH	lch(49.04, 77.87, 299.61°)
OKLab	oklab(57.63% 0.0316 -0.1942)
OKLCH	oklch(57.63% 0.197 279.2)
XYZ	xyz(24.6447, 17.6300, 79.1793)
Luminance	0.1763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663E9 #E6E963

analogous

#63A3E9 #6663E9 #A963E9

triadic

#6663E9 #E96663 #63E966

tetradic

#6663E9 #E963A3 #E6E963 #63E9A9

square

#6663E9 #E963A3 #E6E963 #63E9A9

split-complementary

#6663E9 #E9A963 #A3E963

monochromatic

#1D1AB8 #312DE1 #6663E9 #9B99F1 #CFCEF8

Accessibility & contrast

On white

4.64

#6663E9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#6663E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6663E9

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663E9	#FFFFFF	#000000	##FFFFFF
##6663E9	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AED

Deuteranopia (green-blind)

#006FE6

Tritanopia (blue-blind)

#1C839C

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #6663e9;
/* rgb */ color: rgb(102, 99, 233);
/* oklch */ color: oklch(57.6% 0.197 279.2);

Tailwind

colors: {
  custom: {
    50: '#9c8ff1',
    500: '#6663e9',
    950: '#000000',
  },
}

SCSS

$custom: #6663e9;
$custom-light: #9c8ff1;
$custom-dark: #000000;

JSON

{
  "hex": "#6663e9",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 233
  },
  "hsl": {
    "h": 241.343,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.57632,
    "c": 0.19681,
    "h": 279.2
  },
  "luminance": 0.17632
}

Semantic roles & 50–950 ramp

primary

#6663E9

secondary

#EAEBBD

accent

#D70ED3

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #6663E9

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

Preview Lab → · Contrast checker → · Palette generator →