#6387DD#6387DD

#6387DD is a light, vivid blue. Relative luminance 0.252; OKLCH L 63.6% C 0.136 H 265.6°. Best body text is #000000 at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#6387DD
RGB	rgb(99, 135, 221)
HSL	hsl(222, 64%, 63%)
HSV	hsv(222, 55%, 87%)
CMYK	cmyk(55.2%, 38.9%, 0%, 13.3%)
CIE-LAB	lab(57.27, 12.29, -47.79)
CIE-LCH	lch(57.27, 49.34, 284.42°)
OKLab	oklab(63.58% -0.0105 -0.1355)
OKLCH	oklch(63.58% 0.136 265.6)
XYZ	xyz(26.8563, 25.1990, 71.8413)
Luminance	0.2520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6387DD #DDB963

analogous

#63C4DD #6387DD #7C63DD

triadic

#6387DD #DD6387 #87DD63

tetradic

#6387DD #DD63C4 #DDB963 #63DD7C

square

#6387DD #DD63C4 #DDB963 #63DD7C

split-complementary

#6387DD #DD7C63 #C4DD63

monochromatic

#2349A2 #3160D2 #6387DD #95AEE8 #C7D4F3

Accessibility & contrast

On white

3.48

#6387DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.04

#6387DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6387DD

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6387DD	#FFFFFF	#000000	##000000
##6387DD	1.00	3.48	6.04	6.04
#FFFFFF	3.48	1.00	21.00	21.00
#000000	6.04	21.00	1.00	1.00
##000000	6.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#638FE0

Deuteranopia (green-blind)

#5484DB

Tritanopia (blue-blind)

#179AA7

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #6387dd;
/* rgb */ color: rgb(99, 135, 221);
/* oklch */ color: oklch(63.6% 0.136 265.6);

Tailwind

colors: {
  custom: {
    50: '#98a9e8',
    500: '#6387dd',
    950: '#000000',
  },
}

SCSS

$custom: #6387dd;
$custom-light: #98a9e8;
$custom-dark: #000000;

JSON

{
  "hex": "#6387dd",
  "rgb": {
    "r": 99,
    "g": 135,
    "b": 221
  },
  "hsl": {
    "h": 222.295,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.63578,
    "c": 0.13589,
    "h": 265.6
  },
  "luminance": 0.25201
}

Semantic roles & 50–950 ramp

primary

#6387DD

secondary

#E4D7B8

accent

#9719CC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #6387DD

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

Preview Lab → · Contrast checker → · Palette generator →