#6366CA#6366CA

#6366CA is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.8% C 0.152 H 279.0°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#6366CA
RGB	rgb(99, 102, 202)
HSL	hsl(238, 49%, 59%)
HSV	hsv(238, 51%, 79%)
CMYK	cmyk(51%, 49.5%, 0%, 20.8%)
CIE-LAB	lab(47.52, 26.33, -52.57)
CIE-LCH	lch(47.52, 58.79, 296.61°)
OKLab	oklab(55.79% 0.0237 -0.1498)
OKLCH	oklch(55.79% 0.152 279)
XYZ	xyz(20.5543, 16.4185, 57.9517)
Luminance	0.1642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366CA #CAC763

analogous

#639ACA #6366CA #9463CA

triadic

#6366CA #CA6366 #66CA63

tetradic

#6366CA #CA639A #CAC763 #63CA94

square

#6366CA #CA639A #CAC763 #63CA94

split-complementary

#6366CA #CA9463 #9ACA63

monochromatic

#2D3085 #3D40B3 #6366CA #9193DA #BEC0E9

Accessibility & contrast

On white

4.90

#6366CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#6366CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366CA

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366CA	#FFFFFF	#000000	##FFFFFF
##6366CA	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3775CE

Deuteranopia (green-blind)

#2C6DC8

Tritanopia (blue-blind)

#397C8E

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #6366ca;
/* rgb */ color: rgb(99, 102, 202);
/* oklch */ color: oklch(55.8% 0.152 279.0);

Tailwind

colors: {
  custom: {
    50: '#9691db',
    500: '#6366ca',
    950: '#000000',
  },
}

SCSS

$custom: #6366ca;
$custom-light: #9691db;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ca",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 202
  },
  "hsl": {
    "h": 238.252,
    "s": 49.282,
    "l": 59.02
  },
  "oklch": {
    "l": 0.55788,
    "c": 0.15164,
    "h": 279
  },
  "luminance": 0.1642
}

Semantic roles & 50–950 ramp

primary

#6366CA

secondary

#D9D7B0

accent

#D54FD9

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #6366CA

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

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