#6366EC#6366EC

#6366EC is a mid, vivid blue. Relative luminance 0.182; OKLCH L 58.2% C 0.198 H 277.4°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#6366EC
RGB	rgb(99, 102, 236)
HSL	hsl(239, 78%, 66%)
HSV	hsv(239, 58%, 93%)
CMYK	cmyk(58.1%, 56.8%, 0%, 7.5%)
CIE-LAB	lab(49.75, 37.09, -68.26)
CIE-LCH	lch(49.75, 77.69, 298.52°)
OKLab	oklab(58.17% 0.0253 -0.1959)
OKLCH	oklch(58.17% 0.198 277.4)
XYZ	xyz(25.0324, 18.2097, 81.5363)
Luminance	0.1821 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366EC #ECE963

analogous

#63AAEC #6366EC #A463EC

triadic

#6366EC #EC6366 #66EC63

tetradic

#6366EC #EC63AA #ECE963 #63ECA4

square

#6366EC #EC63AA #ECE963 #63ECA4

split-complementary

#6366EC #ECA463 #AAEC63

monochromatic

#171BBE #2C30E5 #6366EC #9A9CF3 #D0D1F9

Accessibility & contrast

On white

4.52

#6366EC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#6366EC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366EC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366EC	#FFFFFF	#000000	##000000
##6366EC	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007CF1

Deuteranopia (green-blind)

#0071E9

Tritanopia (blue-blind)

#00869F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #6366ec;
/* rgb */ color: rgb(99, 102, 236);
/* oklch */ color: oklch(58.2% 0.198 277.4);

Tailwind

colors: {
  custom: {
    50: '#9b91f3',
    500: '#6366ec',
    950: '#000000',
  },
}

SCSS

$custom: #6366ec;
$custom-light: #9b91f3;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ec",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 236
  },
  "hsl": {
    "h": 238.686,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.58168,
    "c": 0.19756,
    "h": 277.4
  },
  "luminance": 0.18212
}

Semantic roles & 50–950 ramp

primary

#6366EC

secondary

#ECEBBF

accent

#D60BDB

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6366EC

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

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