#6663EB#6663EB

#6663EB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.8% C 0.199 H 279.1°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#6663EB
RGB	rgb(102, 99, 235)
HSL	hsl(241, 77%, 65%)
HSV	hsv(241, 58%, 92%)
CMYK	cmyk(56.6%, 57.9%, 0%, 7.8%)
CIE-LAB	lab(49.19, 39.10, -68.60)
CIE-LCH	lch(49.19, 78.96, 299.68°)
OKLab	oklab(57.78% 0.0316 -0.1969)
OKLCH	oklch(57.78% 0.199 279.1)
XYZ	xyz(24.9320, 17.7449, 80.6925)
Luminance	0.1775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663EB #E8EB63

analogous

#63A4EB #6663EB #AA63EB

triadic

#6663EB #EB6663 #63EB66

tetradic

#6663EB #EB63A4 #E8EB63 #63EBAA

square

#6663EB #EB63A4 #E8EB63 #63EBAA

split-complementary

#6663EB #EBAA63 #A4EB63

monochromatic

#1C18BC #312DE4 #6663EB #9B99F2 #D0CFF9

Accessibility & contrast

On white

4.62

#6663EB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#6663EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6663EB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663EB	#FFFFFF	#000000	##FFFFFF
##6663EB	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AF0

Deuteranopia (green-blind)

#0070E8

Tritanopia (blue-blind)

#17839D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #6663eb;
/* rgb */ color: rgb(102, 99, 235);
/* oklch */ color: oklch(57.8% 0.199 279.1);

Tailwind

colors: {
  custom: {
    50: '#9d8ff2',
    500: '#6663eb',
    950: '#000000',
  },
}

SCSS

$custom: #6663eb;
$custom-light: #9d8ff2;
$custom-dark: #000000;

JSON

{
  "hex": "#6663eb",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 235
  },
  "hsl": {
    "h": 241.324,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.57781,
    "c": 0.1994,
    "h": 279.1
  },
  "luminance": 0.17747
}

Semantic roles & 50–950 ramp

primary

#6663EB

secondary

#EBECBE

accent

#DA0CD5

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #6663EB

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

Preview Lab → · Contrast checker → · Palette generator →