#6388DC#6388DC

#6388DC is a light, vivid blue. Relative luminance 0.254; OKLCH L 63.7% C 0.133 H 264.9°. Best body text is #000000 at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#6388DC
RGB	rgb(99, 136, 220)
HSL	hsl(222, 63%, 63%)
HSV	hsv(222, 55%, 86%)
CMYK	cmyk(55%, 38.2%, 0%, 13.7%)
CIE-LAB	lab(57.49, 11.37, -46.88)
CIE-LCH	lch(57.49, 48.24, 283.63°)
OKLab	oklab(63.73% -0.0118 -0.1328)
OKLCH	oklch(63.73% 0.133 264.9)
XYZ	xyz(26.8637, 25.4262, 71.1884)
Luminance	0.2543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6388DC #DCB763

analogous

#63C4DC #6388DC #7B63DC

triadic

#6388DC #DC6388 #88DC63

tetradic

#6388DC #DC63C4 #DCB763 #63DC7B

square

#6388DC #DC63C4 #DCB763 #63DC7B

split-complementary

#6388DC #DC7B63 #C4DC63

monochromatic

#244AA1 #3162D1 #6388DC #95AEE7 #C7D4F2

Accessibility & contrast

On white

3.45

#6388DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.09

#6388DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6388DC

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6388DC	#FFFFFF	#000000	##000000
##6388DC	1.00	3.45	6.09	6.09
#FFFFFF	3.45	1.00	21.00	21.00
#000000	6.09	21.00	1.00	1.00
##000000	6.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6690DF

Deuteranopia (green-blind)

#5785DA

Tritanopia (blue-blind)

#199AA7

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #6388dc;
/* rgb */ color: rgb(99, 136, 220);
/* oklch */ color: oklch(63.7% 0.133 264.9);

Tailwind

colors: {
  custom: {
    50: '#97aae7',
    500: '#6388dc',
    950: '#000000',
  },
}

SCSS

$custom: #6388dc;
$custom-light: #97aae7;
$custom-dark: #000000;

JSON

{
  "hex": "#6388dc",
  "rgb": {
    "r": 99,
    "g": 136,
    "b": 220
  },
  "hsl": {
    "h": 221.653,
    "s": 63.351,
    "l": 62.549
  },
  "oklch": {
    "l": 0.63731,
    "c": 0.13335,
    "h": 264.9
  },
  "luminance": 0.25428
}

Semantic roles & 50–950 ramp

primary

#6388DC

secondary

#E3D6B7

accent

#951ACB

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #6388DC

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

Preview Lab → · Contrast checker → · Palette generator →