#6366DF#6366DF

#6366DF is a mid, vivid blue. Relative luminance 0.175; OKLCH L 57.2% C 0.180 H 278.0°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#6366DF
RGB	rgb(99, 102, 223)
HSL	hsl(239, 66%, 63%)
HSV	hsv(239, 56%, 87%)
CMYK	cmyk(55.6%, 54.3%, 0%, 12.5%)
CIE-LAB	lab(48.86, 32.96, -62.37)
CIE-LCH	lch(48.86, 70.54, 297.85°)
OKLab	oklab(57.23% 0.025 -0.1786)
OKLCH	oklch(57.23% 0.18 278)
XYZ	xyz(23.2120, 17.4815, 71.9488)
Luminance	0.1748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366DF #DFDC63

analogous

#63A4DF #6366DF #9E63DF

triadic

#6366DF #DF6366 #66DF63

tetradic

#6366DF #DF63A4 #DFDC63 #63DF9E

square

#6366DF #DF63A4 #DFDC63 #63DF9E

split-complementary

#6366DF #DF9E63 #A4DF63

monochromatic

#2225A6 #3034D5 #6366DF #9698E9 #C9CAF4

Accessibility & contrast

On white

4.67

#6366DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#6366DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #6366DF

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366DF	#FFFFFF	#000000	##FFFFFF
##6366DF	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1579E3

Deuteranopia (green-blind)

#006FDC

Tritanopia (blue-blind)

#208299

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #6366df;
/* rgb */ color: rgb(99, 102, 223);
/* oklch */ color: oklch(57.2% 0.180 278.0);

Tailwind

colors: {
  custom: {
    50: '#9991ea',
    500: '#6366df',
    950: '#000000',
  },
}

SCSS

$custom: #6366df;
$custom-light: #9991ea;
$custom-dark: #000000;

JSON

{
  "hex": "#6366df",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 223
  },
  "hsl": {
    "h": 238.548,
    "s": 65.957,
    "l": 63.137
  },
  "oklch": {
    "l": 0.57225,
    "c": 0.18037,
    "h": 278
  },
  "luminance": 0.17483
}

Semantic roles & 50–950 ramp

primary

#6366DF

secondary

#E5E4B9

accent

#C918CE

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #6366DF

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

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