#6366BA#6366BA

#6366BA is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.8% C 0.129 H 279.7°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#6366BA
RGB	rgb(99, 102, 186)
HSL	hsl(238, 39%, 56%)
HSV	hsv(238, 47%, 73%)
CMYK	cmyk(46.8%, 45.2%, 0%, 27.1%)
CIE-LAB	lab(46.58, 21.37, -44.83)
CIE-LCH	lch(46.58, 49.67, 295.49°)
OKLab	oklab(54.77% 0.0217 -0.1271)
OKLCH	oklch(54.77% 0.129 279.7)
XYZ	xyz(18.7572, 15.6996, 48.4868)
Luminance	0.1570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366BA #BAB763

analogous

#6391BA #6366BA #8B63BA

triadic

#6366BA #BA6366 #66BA63

tetradic

#6366BA #BA6391 #BAB763 #63BA8B

square

#6366BA #BA6391 #BAB763 #63BA8B

split-complementary

#6366BA #BA8B63 #91BA63

monochromatic

#323471 #45489B #6366BA #8D90CD #B8B9E0

Accessibility & contrast

On white

5.07

#6366BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#6366BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366BA

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366BA	#FFFFFF	#000000	##FFFFFF
##6366BA	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4472BD

Deuteranopia (green-blind)

#3E6BB8

Tritanopia (blue-blind)

#457887

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #6366ba;
/* rgb */ color: rgb(99, 102, 186);
/* oklch */ color: oklch(54.8% 0.129 279.7);

Tailwind

colors: {
  custom: {
    50: '#9491cf',
    500: '#6366ba',
    950: '#000000',
  },
}

SCSS

$custom: #6366ba;
$custom-light: #9491cf;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ba",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 186
  },
  "hsl": {
    "h": 237.931,
    "s": 38.667,
    "l": 55.882
  },
  "oklch": {
    "l": 0.54773,
    "c": 0.12893,
    "h": 279.7
  },
  "luminance": 0.15701
}

Semantic roles & 50–950 ramp

primary

#6366BA

secondary

#CECDAA

accent

#CB59CF

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #6366BA

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

Preview Lab → · Contrast checker → · Palette generator →