#6663DB#6663DB

#6663DB is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.6% C 0.178 H 280.2°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#6663DB
RGB	rgb(102, 99, 219)
HSL	hsl(242, 63%, 62%)
HSV	hsv(242, 55%, 86%)
CMYK	cmyk(53.4%, 54.8%, 0%, 14.1%)
CIE-LAB	lab(48.09, 34.10, -61.35)
CIE-LCH	lch(48.09, 70.19, 299.06°)
OKLab	oklab(56.62% 0.0315 -0.1755)
OKLCH	oklch(56.62% 0.178 280.2)
XYZ	xyz(22.7235, 16.8615, 69.0613)
Luminance	0.1686 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663DB #D8DB63

analogous

#639CDB #6663DB #A263DB

triadic

#6663DB #DB6663 #63DB66

tetradic

#6663DB #DB639C #D8DB63 #63DBA2

square

#6663DB #DB639C #D8DB63 #63DBA2

split-complementary

#6663DB #DBA263 #9CDB63

monochromatic

#28259F #3531D0 #6663DB #9795E6 #C8C6F2

Accessibility & contrast

On white

4.80

#6663DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#6663DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6663DB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663DB	#FFFFFF	#000000	##FFFFFF
##6663DB	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1377DF

Deuteranopia (green-blind)

#006ED8

Tritanopia (blue-blind)

#317E95

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #6663db;
/* rgb */ color: rgb(102, 99, 219);
/* oklch */ color: oklch(56.6% 0.178 280.2);

Tailwind

colors: {
  custom: {
    50: '#9a8fe7',
    500: '#6663db',
    950: '#000000',
  },
}

SCSS

$custom: #6663db;
$custom-light: #9a8fe7;
$custom-dark: #000000;

JSON

{
  "hex": "#6663db",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 219
  },
  "hsl": {
    "h": 241.5,
    "s": 62.5,
    "l": 62.353
  },
  "oklch": {
    "l": 0.56616,
    "c": 0.17834,
    "h": 280.2
  },
  "luminance": 0.16863
}

Semantic roles & 50–950 ramp

primary

#6663DB

secondary

#E2E3B7

accent

#CA1BC6

background

#FAF8FE

surface

#F3F0FC

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #6663DB

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

Preview Lab → · Contrast checker → · Palette generator →