#6366E8#6366E8

#6366E8 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.9% C 0.192 H 277.5°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#6366E8
RGB	rgb(99, 102, 232)
HSL	hsl(239, 74%, 65%)
HSV	hsv(239, 57%, 91%)
CMYK	cmyk(57.3%, 56%, 0%, 9%)
CIE-LAB	lab(49.47, 35.82, -66.46)
CIE-LCH	lch(49.47, 75.50, 298.32°)
OKLab	oklab(57.87% 0.0253 -0.1906)
OKLCH	oklch(57.87% 0.192 277.5)
XYZ	xyz(24.4578, 17.9798, 78.5099)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366E8 #E8E563

analogous

#63A8E8 #6366E8 #A363E8

triadic

#6366E8 #E86366 #66E863

tetradic

#6366E8 #E863A8 #E8E563 #63E8A3

square

#6366E8 #E863A8 #E8E563 #63E8A3

split-complementary

#6366E8 #E8A363 #A8E863

monochromatic

#1B1EB6 #2E32E0 #6366E8 #989AF0 #CECFF8

Accessibility & contrast

On white

4.57

#6366E8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#6366E8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366E8

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366E8	#FFFFFF	#000000	##000000
##6366E8	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BEC

Deuteranopia (green-blind)

#0070E5

Tritanopia (blue-blind)

#07859D

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6366e8;
/* rgb */ color: rgb(99, 102, 232);
/* oklch */ color: oklch(57.9% 0.192 277.5);

Tailwind

colors: {
  custom: {
    50: '#9a91f0',
    500: '#6366e8',
    950: '#000000',
  },
}

SCSS

$custom: #6366e8;
$custom-light: #9a91f0;
$custom-dark: #000000;

JSON

{
  "hex": "#6366e8",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 232
  },
  "hsl": {
    "h": 238.647,
    "s": 74.302,
    "l": 64.902
  },
  "oklch": {
    "l": 0.57873,
    "c": 0.19232,
    "h": 277.5
  },
  "luminance": 0.17982
}

Semantic roles & 50–950 ramp

primary

#6366E8

secondary

#EAE9BD

accent

#D20FD6

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6366E8

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

Preview Lab → · Contrast checker → · Palette generator →