#6366CD#6366CD

#6366CD is a mid, vivid blue. Relative luminance 0.166; OKLCH L 56.0% C 0.156 H 278.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#6366CD
RGB	rgb(99, 102, 205)
HSL	hsl(238, 51%, 60%)
HSV	hsv(238, 52%, 80%)
CMYK	cmyk(51.7%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(47.70, 27.27, -53.99)
CIE-LCH	lch(47.70, 60.49, 296.80°)
OKLab	oklab(55.99% 0.0239 -0.154)
OKLCH	oklch(55.99% 0.156 278.8)
XYZ	xyz(20.9130, 16.5619, 59.8406)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366CD #CDCA63

analogous

#639BCD #6366CD #9563CD

triadic

#6366CD #CD6366 #66CD63

tetradic

#6366CD #CD639B #CDCA63 #63CD95

square

#6366CD #CD639B #CDCA63 #63CD95

split-complementary

#6366CD #CD9563 #9BCD63

monochromatic

#2C2F8A #3B3EB8 #6366CD #9193DC #C0C1EB

Accessibility & contrast

On white

4.87

#6366CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#6366CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366CD

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366CD	#FFFFFF	#000000	##FFFFFF
##6366CD	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3475D1

Deuteranopia (green-blind)

#286DCB

Tritanopia (blue-blind)

#367D90

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #6366cd;
/* rgb */ color: rgb(99, 102, 205);
/* oklch */ color: oklch(56.0% 0.156 278.8);

Tailwind

colors: {
  custom: {
    50: '#9791dd',
    500: '#6366cd',
    950: '#000000',
  },
}

SCSS

$custom: #6366cd;
$custom-light: #9791dd;
$custom-dark: #000000;

JSON

{
  "hex": "#6366cd",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 238.302,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.55987,
    "c": 0.15581,
    "h": 278.8
  },
  "luminance": 0.16563
}

Semantic roles & 50–950 ramp

primary

#6366CD

secondary

#DAD9B1

accent

#D74DDB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #6366CD

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

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