#6366BF#6366BF

#6366BF is a mid, vivid blue. Relative luminance 0.159; OKLCH L 55.1% C 0.136 H 279.5°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#6366BF
RGB	rgb(99, 102, 191)
HSL	hsl(238, 42%, 57%)
HSV	hsv(238, 48%, 75%)
CMYK	cmyk(48.2%, 46.6%, 0%, 25.1%)
CIE-LAB	lab(46.86, 22.91, -47.28)
CIE-LCH	lch(46.86, 52.53, 295.85°)
OKLab	oklab(55.08% 0.0224 -0.1342)
OKLCH	oklch(55.08% 0.136 279.5)
XYZ	xyz(19.2981, 15.9160, 51.3353)
Luminance	0.1592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366BF #BFBC63

analogous

#6394BF #6366BF #8E63BF

triadic

#6366BF #BF6366 #66BF63

tetradic

#6366BF #BF6394 #BFBC63 #63BF8E

square

#6366BF #BF6394 #BFBC63 #63BF8E

split-complementary

#6366BF #BF8E63 #94BF63

monochromatic

#313377 #4346A2 #6366BF #8E91D1 #BABBE3

Accessibility & contrast

On white

5.02

#6366BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#6366BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366BF

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366BF	#FFFFFF	#000000	##FFFFFF
##6366BF	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4173C2

Deuteranopia (green-blind)

#396CBD

Tritanopia (blue-blind)

#417989

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #6366bf;
/* rgb */ color: rgb(99, 102, 191);
/* oklch */ color: oklch(55.1% 0.136 279.5);

Tailwind

colors: {
  custom: {
    50: '#9591d3',
    500: '#6366bf',
    950: '#000000',
  },
}

SCSS

$custom: #6366bf;
$custom-light: #9591d3;
$custom-dark: #000000;

JSON

{
  "hex": "#6366bf",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 191
  },
  "hsl": {
    "h": 238.043,
    "s": 41.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55082,
    "c": 0.1361,
    "h": 279.5
  },
  "luminance": 0.15917
}

Semantic roles & 50–950 ramp

primary

#6366BF

secondary

#D2D0AC

accent

#CE56D2

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #6366BF

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

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