#6366FD#6366FD

#6366FD is a mid, highly saturated blue. Relative luminance 0.192; OKLCH L 59.5% C 0.219 H 276.6°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#6366FD
RGB	rgb(99, 102, 253)
HSL	hsl(239, 97%, 69%)
HSV	hsv(239, 61%, 99%)
CMYK	cmyk(60.9%, 59.7%, 0%, 0.8%)
CIE-LAB	lab(50.97, 42.51, -75.75)
CIE-LCH	lch(50.97, 86.86, 299.30°)
OKLab	oklab(59.46% 0.025 -0.218)
OKLCH	oklch(59.46% 0.219 276.6)
XYZ	xyz(27.6208, 19.2451, 95.1686)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366FD #FDFA63

analogous

#63B3FD #6366FD #AD63FD

triadic

#6366FD #FD6366 #66FD63

tetradic

#6366FD #FD63B3 #FDFA63 #63FDAD

square

#6366FD #FD63B3 #FDFA63 #63FDAD

split-complementary

#6366FD #FDAD63 #B3FD63

monochromatic

#0307E3 #272BFC #6366FD #9FA1FE #DCDDFF

Accessibility & contrast

On white

4.33

#6366FD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#6366FD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366FD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366FD	#FFFFFF	#000000	##000000
##6366FD	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080FF

Deuteranopia (green-blind)

#0073FA

Tritanopia (blue-blind)

#008BA8

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #6366fd;
/* rgb */ color: rgb(99, 102, 253);
/* oklch */ color: oklch(59.5% 0.219 276.6);

Tailwind

colors: {
  custom: {
    50: '#9e92ff',
    500: '#6366fd',
    950: '#000000',
  },
}

SCSS

$custom: #6366fd;
$custom-light: #9e92ff;
$custom-dark: #000000;

JSON

{
  "hex": "#6366fd",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 253
  },
  "hsl": {
    "h": 238.831,
    "s": 97.468,
    "l": 69.02
  },
  "oklch": {
    "l": 0.59457,
    "c": 0.2194,
    "h": 276.6
  },
  "luminance": 0.19247
}

Semantic roles & 50–950 ramp

primary

#6366FD

secondary

#F4F4C7

accent

#E100E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #6366FD

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

Preview Lab → · Contrast checker → · Palette generator →