#6366ED#6366ED

#6366ED is a mid, vivid blue. Relative luminance 0.183; OKLCH L 58.2% C 0.199 H 277.3°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#6366ED
RGB	rgb(99, 102, 237)
HSL	hsl(239, 79%, 66%)
HSV	hsv(239, 58%, 93%)
CMYK	cmyk(58.2%, 57%, 0%, 7.1%)
CIE-LAB	lab(49.82, 37.41, -68.70)
CIE-LCH	lch(49.82, 78.23, 298.57°)
OKLab	oklab(58.24% 0.0253 -0.1972)
OKLCH	oklch(58.24% 0.199 277.3)
XYZ	xyz(25.1781, 18.2680, 82.3036)
Luminance	0.1827 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366ED #EDEA63

analogous

#63ABED #6366ED #A563ED

triadic

#6366ED #ED6366 #66ED63

tetradic

#6366ED #ED63AB #EDEA63 #63EDA5

square

#6366ED #ED63AB #EDEA63 #63EDA5

split-complementary

#6366ED #EDA563 #ABED63

monochromatic

#161AC0 #2C30E7 #6366ED #9A9CF3 #D1D2FA

Accessibility & contrast

On white

4.51

#6366ED on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#6366ED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366ED

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366ED	#FFFFFF	#000000	##000000
##6366ED	1.00	4.51	4.65	4.65
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CF2

Deuteranopia (green-blind)

#0071EA

Tritanopia (blue-blind)

#0086A0

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6366ed;
/* rgb */ color: rgb(99, 102, 237);
/* oklch */ color: oklch(58.2% 0.199 277.3);

Tailwind

colors: {
  custom: {
    50: '#9b91f4',
    500: '#6366ed',
    950: '#000000',
  },
}

SCSS

$custom: #6366ed;
$custom-light: #9b91f4;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ed",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 237
  },
  "hsl": {
    "h": 238.696,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.58242,
    "c": 0.19887,
    "h": 277.3
  },
  "luminance": 0.1827
}

Semantic roles & 50–950 ramp

primary

#6366ED

secondary

#EDECBF

accent

#D70ADC

background

#FAF8FF

surface

#F4F0FE

border

#CECBD6

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6366ED

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

Preview Lab → · Contrast checker → · Palette generator →