#6366EA#6366EA

#6366EA is a mid, vivid blue. Relative luminance 0.181; OKLCH L 58.0% C 0.195 H 277.5°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#6366EA
RGB	rgb(99, 102, 234)
HSL	hsl(239, 76%, 65%)
HSV	hsv(239, 58%, 92%)
CMYK	cmyk(57.7%, 56.4%, 0%, 8.2%)
CIE-LAB	lab(49.61, 36.46, -67.36)
CIE-LCH	lch(49.61, 76.59, 298.42°)
OKLab	oklab(58.02% 0.0253 -0.1933)
OKLCH	oklch(58.02% 0.195 277.5)
XYZ	xyz(24.7435, 18.0941, 80.0146)
Luminance	0.1810 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366EA #EAE763

analogous

#63A9EA #6366EA #A463EA

triadic

#6366EA #EA6366 #66EA63

tetradic

#6366EA #EA63A9 #EAE763 #63EAA4

square

#6366EA #EA63A9 #EAE763 #63EAA4

split-complementary

#6366EA #EAA463 #A9EA63

monochromatic

#191DBA #2D31E3 #6366EA #999BF1 #CFD0F9

Accessibility & contrast

On white

4.55

#6366EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#6366EA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366EA

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366EA	#FFFFFF	#000000	##000000
##6366EA	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CEE

Deuteranopia (green-blind)

#0070E7

Tritanopia (blue-blind)

#00859E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6366ea;
/* rgb */ color: rgb(99, 102, 234);
/* oklch */ color: oklch(58.0% 0.195 277.5);

Tailwind

colors: {
  custom: {
    50: '#9b91f2',
    500: '#6366ea',
    950: '#000000',
  },
}

SCSS

$custom: #6366ea;
$custom-light: #9b91f2;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ea",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 234
  },
  "hsl": {
    "h": 238.667,
    "s": 76.271,
    "l": 65.294
  },
  "oklch": {
    "l": 0.5802,
    "c": 0.19494,
    "h": 277.5
  },
  "luminance": 0.18096
}

Semantic roles & 50–950 ramp

primary

#6366EA

secondary

#EBEABE

accent

#D40DD8

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6366EA

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

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