#6366DE#6366DE

#6366DE is a mid, vivid blue. Relative luminance 0.174; OKLCH L 57.2% C 0.179 H 278.0°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#6366DE
RGB	rgb(99, 102, 222)
HSL	hsl(239, 65%, 63%)
HSV	hsv(239, 55%, 87%)
CMYK	cmyk(55.4%, 54.1%, 0%, 12.9%)
CIE-LAB	lab(48.79, 32.64, -61.91)
CIE-LCH	lch(48.79, 69.99, 297.80°)
OKLab	oklab(57.15% 0.025 -0.1773)
OKLCH	oklch(57.15% 0.179 278)
XYZ	xyz(23.0776, 17.4278, 71.2409)
Luminance	0.1743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366DE #DEDB63

analogous

#63A3DE #6366DE #9E63DE

triadic

#6366DE #DE6366 #66DE63

tetradic

#6366DE #DE63A3 #DEDB63 #63DE9E

square

#6366DE #DE63A3 #DEDB63 #63DE9E

split-complementary

#6366DE #DE9E63 #A3DE63

monochromatic

#2326A4 #3034D3 #6366DE #9698E9 #C8C9F3

Accessibility & contrast

On white

4.68

#6366DE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#6366DE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366DE

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366DE	#FFFFFF	#000000	##FFFFFF
##6366DE	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1879E2

Deuteranopia (green-blind)

#006FDB

Tritanopia (blue-blind)

#228298

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #6366de;
/* rgb */ color: rgb(99, 102, 222);
/* oklch */ color: oklch(57.2% 0.179 278.0);

Tailwind

colors: {
  custom: {
    50: '#9991e9',
    500: '#6366de',
    950: '#000000',
  },
}

SCSS

$custom: #6366de;
$custom-light: #9991e9;
$custom-dark: #000000;

JSON

{
  "hex": "#6366de",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 222
  },
  "hsl": {
    "h": 238.537,
    "s": 65.079,
    "l": 62.941
  },
  "oklch": {
    "l": 0.57154,
    "c": 0.17902,
    "h": 278
  },
  "luminance": 0.17429
}

Semantic roles & 50–950 ramp

primary

#6366DE

secondary

#E5E3B8

accent

#C919CD

background

#F9F8FE

surface

#F2F0FD

border

#CCCBD5

text

#0F0C16

muted

#7E7D84

Preview Lab

Preview with #6366DE

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

Preview Lab → · Contrast checker → · Palette generator →