#6366BE#6366BE

#6366BE is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.0% C 0.135 H 279.5°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#6366BE
RGB	rgb(99, 102, 190)
HSL	hsl(238, 41%, 57%)
HSV	hsv(238, 48%, 75%)
CMYK	cmyk(47.9%, 46.3%, 0%, 25.5%)
CIE-LAB	lab(46.81, 22.60, -46.79)
CIE-LCH	lch(46.81, 51.96, 295.78°)
OKLab	oklab(55.02% 0.0223 -0.1328)
OKLCH	oklch(55.02% 0.135 279.5)
XYZ	xyz(19.1884, 15.8721, 50.7578)
Luminance	0.1587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366BE #BEBB63

analogous

#6394BE #6366BE #8E63BE

triadic

#6366BE #BE6366 #66BE63

tetradic

#6366BE #BE6394 #BEBB63 #63BE8E

square

#6366BE #BE6394 #BEBB63 #63BE8E

split-complementary

#6366BE #BE8E63 #94BE63

monochromatic

#313376 #4346A1 #6366BE #8E90D0 #B9BBE2

Accessibility & contrast

On white

5.03

#6366BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.17

#6366BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366BE

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366BE	#FFFFFF	#000000	##FFFFFF
##6366BE	1.00	5.03	4.17	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.17	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4172C1

Deuteranopia (green-blind)

#3A6CBC

Tritanopia (blue-blind)

#427989

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #6366be;
/* rgb */ color: rgb(99, 102, 190);
/* oklch */ color: oklch(55.0% 0.135 279.5);

Tailwind

colors: {
  custom: {
    50: '#9591d2',
    500: '#6366be',
    950: '#000000',
  },
}

SCSS

$custom: #6366be;
$custom-light: #9591d2;
$custom-dark: #000000;

JSON

{
  "hex": "#6366be",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 190
  },
  "hsl": {
    "h": 238.022,
    "s": 41.176,
    "l": 56.667
  },
  "oklch": {
    "l": 0.5502,
    "c": 0.13468,
    "h": 279.5
  },
  "luminance": 0.15873
}

Semantic roles & 50–950 ramp

primary

#6366BE

secondary

#D1D0AC

accent

#CD57D1

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #6366BE

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

Preview Lab → · Contrast checker → · Palette generator →