#6663CD#6663CD

#6663CD is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.6% C 0.159 H 281.2°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#6663CD
RGB	rgb(102, 99, 205)
HSL	hsl(242, 51%, 60%)
HSV	hsv(242, 52%, 80%)
CMYK	cmyk(50.2%, 51.7%, 0%, 19.6%)
CIE-LAB	lab(47.18, 29.75, -54.82)
CIE-LCH	lch(47.18, 62.38, 298.49°)
OKLab	oklab(55.65% 0.0308 -0.1563)
OKLCH	oklch(55.65% 0.159 281.2)
XYZ	xyz(20.9574, 16.1551, 59.7597)
Luminance	0.1616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6663CD #CACD63

analogous

#6395CD #6663CD #9B63CD

triadic

#6663CD #CD6663 #63CD66

tetradic

#6663CD #CD6395 #CACD63 #63CD9B

square

#6663CD #CD6395 #CACD63 #63CD9B

split-complementary

#6663CD #CD9B63 #95CD63

monochromatic

#2F2C8A #3E3BB8 #6663CD #9391DC #C1C0EB

Accessibility & contrast

On white

4.96

#6663CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#6663CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6663CD

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6663CD	#FFFFFF	#000000	##FFFFFF
##6663CD	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D74D1

Deuteranopia (green-blind)

#236CCB

Tritanopia (blue-blind)

#3E7A8E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #6663cd;
/* rgb */ color: rgb(102, 99, 205);
/* oklch */ color: oklch(55.6% 0.159 281.2);

Tailwind

colors: {
  custom: {
    50: '#988fdd',
    500: '#6663cd',
    950: '#000000',
  },
}

SCSS

$custom: #6663cd;
$custom-light: #988fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#6663cd",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 205
  },
  "hsl": {
    "h": 241.698,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.55648,
    "c": 0.15936,
    "h": 281.2
  },
  "luminance": 0.16156
}

Semantic roles & 50–950 ramp

primary

#6663CD

secondary

#D9DAB1

accent

#DB4DD7

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #6663CD

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

Preview Lab → · Contrast checker → · Palette generator →