#6366D0#6366D0

#6366D0 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 56.2% C 0.160 H 278.7°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#6366D0
RGB	rgb(99, 102, 208)
HSL	hsl(238, 54%, 60%)
HSV	hsv(238, 52%, 82%)
CMYK	cmyk(52.4%, 51%, 0%, 18.4%)
CIE-LAB	lab(47.89, 28.21, -55.41)
CIE-LCH	lch(47.89, 62.18, 296.99°)
OKLab	oklab(56.19% 0.0242 -0.1581)
OKLCH	oklch(56.19% 0.16 278.7)
XYZ	xyz(21.2786, 16.7082, 61.7660)
Luminance	0.1671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366D0 #D0CD63

analogous

#639CD0 #6366D0 #9763D0

triadic

#6366D0 #D06366 #66D063

tetradic

#6366D0 #D0639C #D0CD63 #63D097

square

#6366D0 #D0639C #D0CD63 #63D097

split-complementary

#6366D0 #D09763 #9CD063

monochromatic

#2B2D8E #393DBD #6366D0 #9294DE #C1C2EC

Accessibility & contrast

On white

4.84

#6366D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#6366D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366D0

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366D0	#FFFFFF	#000000	##FFFFFF
##6366D0	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3076D4

Deuteranopia (green-blind)

#226DCE

Tritanopia (blue-blind)

#337E91

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #6366d0;
/* rgb */ color: rgb(99, 102, 208);
/* oklch */ color: oklch(56.2% 0.160 278.7);

Tailwind

colors: {
  custom: {
    50: '#9791df',
    500: '#6366d0',
    950: '#000000',
  },
}

SCSS

$custom: #6366d0;
$custom-light: #9791df;
$custom-dark: #000000;

JSON

{
  "hex": "#6366d0",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 208
  },
  "hsl": {
    "h": 238.349,
    "s": 53.695,
    "l": 60.196
  },
  "oklch": {
    "l": 0.56187,
    "c": 0.15997,
    "h": 278.7
  },
  "luminance": 0.16709
}

Semantic roles & 50–950 ramp

primary

#6366D0

secondary

#DCDBB3

accent

#BD24C1

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #6366D0

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

Preview Lab → · Contrast checker → · Palette generator →