#6366DA#6366DA

#6366DA is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.9% C 0.174 H 278.2°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#6366DA
RGB	rgb(99, 102, 218)
HSL	hsl(238, 62%, 62%)
HSV	hsv(238, 55%, 85%)
CMYK	cmyk(54.6%, 53.2%, 0%, 14.5%)
CIE-LAB	lab(48.53, 31.37, -60.07)
CIE-LCH	lch(48.53, 67.77, 297.58°)
OKLab	oklab(56.87% 0.0248 -0.1718)
OKLCH	oklch(56.87% 0.174 278.2)
XYZ	xyz(22.5479, 17.2159, 68.4509)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366DA #DAD763

analogous

#63A2DA #6366DA #9B63DA

triadic

#6366DA #DA6366 #66DA63

tetradic

#6366DA #DA63A2 #DAD763 #63DA9B

square

#6366DA #DA63A2 #DAD763 #63DA9B

split-complementary

#6366DA #DA9B63 #A2DA63

monochromatic

#25289D #3235CE #6366DA #9497E6 #C6C7F1

Accessibility & contrast

On white

4.73

#6366DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#6366DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6366DA

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366DA	#FFFFFF	#000000	##FFFFFF
##6366DA	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2178DE

Deuteranopia (green-blind)

#016FD8

Tritanopia (blue-blind)

#288096

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #6366da;
/* rgb */ color: rgb(99, 102, 218);
/* oklch */ color: oklch(56.9% 0.174 278.2);

Tailwind

colors: {
  custom: {
    50: '#9891e6',
    500: '#6366da',
    950: '#000000',
  },
}

SCSS

$custom: #6366da;
$custom-light: #9891e6;
$custom-dark: #000000;

JSON

{
  "hex": "#6366da",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 218
  },
  "hsl": {
    "h": 238.487,
    "s": 61.658,
    "l": 62.157
  },
  "oklch": {
    "l": 0.56873,
    "c": 0.17363,
    "h": 278.2
  },
  "luminance": 0.17217
}

Semantic roles & 50–950 ramp

primary

#6366DA

secondary

#E2E1B7

accent

#C51CC9

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0C16

muted

#7E7D84

Preview Lab

Preview with #6366DA

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

Preview Lab → · Contrast checker → · Palette generator →