#6366C0#6366C0

#6366C0 is a mid, vivid blue. Relative luminance 0.160; OKLCH L 55.1% C 0.138 H 279.4°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#6366C0
RGB	rgb(99, 102, 192)
HSL	hsl(238, 42%, 57%)
HSV	hsv(238, 48%, 75%)
CMYK	cmyk(48.4%, 46.9%, 0%, 24.7%)
CIE-LAB	lab(46.92, 23.22, -47.76)
CIE-LCH	lch(46.92, 53.11, 295.93°)
OKLab	oklab(55.15% 0.0225 -0.1357)
OKLCH	oklch(55.15% 0.138 279.4)
XYZ	xyz(19.4085, 15.9601, 51.9169)
Luminance	0.1596 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366C0 #C0BD63

analogous

#6394C0 #6366C0 #8F63C0

triadic

#6366C0 #C06366 #66C063

tetradic

#6366C0 #C06394 #C0BD63 #63C08F

square

#6366C0 #C06394 #C0BD63 #63C08F

split-complementary

#6366C0 #C08F63 #94C063

monochromatic

#313378 #4245A4 #6366C0 #8F91D2 #BABCE3

Accessibility & contrast

On white

5.01

#6366C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#6366C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366C0

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366C0	#FFFFFF	#000000	##FFFFFF
##6366C0	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4073C3

Deuteranopia (green-blind)

#386CBE

Tritanopia (blue-blind)

#41798A

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #6366c0;
/* rgb */ color: rgb(99, 102, 192);
/* oklch */ color: oklch(55.1% 0.138 279.4);

Tailwind

colors: {
  custom: {
    50: '#9591d3',
    500: '#6366c0',
    950: '#000000',
  },
}

SCSS

$custom: #6366c0;
$custom-light: #9591d3;
$custom-dark: #000000;

JSON

{
  "hex": "#6366c0",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 192
  },
  "hsl": {
    "h": 238.065,
    "s": 42.466,
    "l": 57.059
  },
  "oklch": {
    "l": 0.55145,
    "c": 0.13753,
    "h": 279.4
  },
  "luminance": 0.15961
}

Semantic roles & 50–950 ramp

primary

#6366C0

secondary

#D2D1AC

accent

#CE56D2

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #6366C0

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

Preview Lab → · Contrast checker → · Palette generator →