#648BDD#648BDD

#648BDD is a light, vivid blue. Relative luminance 0.264; OKLCH L 64.5% C 0.131 H 263.9°. Best body text is #000000 at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#648BDD
RGB	rgb(100, 139, 221)
HSL	hsl(221, 64%, 63%)
HSV	hsv(221, 55%, 87%)
CMYK	cmyk(54.8%, 37.1%, 0%, 13.3%)
CIE-LAB	lab(58.41, 10.12, -45.98)
CIE-LCH	lch(58.41, 47.08, 282.41°)
OKLab	oklab(64.47% -0.014 -0.1301)
OKLCH	oklch(64.47% 0.131 263.9)
XYZ	xyz(27.5349, 26.3929, 72.0359)
Luminance	0.2640 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648BDD #DDB664

analogous

#64C7DD #648BDD #7964DD

triadic

#648BDD #DD648B #8BDD64

tetradic

#648BDD #DD64C7 #DDB664 #64DD79

square

#648BDD #DD64C7 #DDB664 #64DD79

split-complementary

#648BDD #DD7964 #C7DD64

monochromatic

#244DA3 #3265D2 #648BDD #96B1E8 #C8D6F3

Accessibility & contrast

On white

3.34

#648BDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.28

#648BDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648BDD

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648BDD	#FFFFFF	#000000	##000000
##648BDD	1.00	3.34	6.28	6.28
#FFFFFF	3.34	1.00	21.00	21.00
#000000	6.28	21.00	1.00	1.00
##000000	6.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A92E0

Deuteranopia (green-blind)

#5B87DB

Tritanopia (blue-blind)

#1B9DA9

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #648bdd;
/* rgb */ color: rgb(100, 139, 221);
/* oklch */ color: oklch(64.5% 0.131 263.9);

Tailwind

colors: {
  custom: {
    50: '#98ace8',
    500: '#648bdd',
    950: '#000000',
  },
}

SCSS

$custom: #648bdd;
$custom-light: #98ace8;
$custom-dark: #000000;

JSON

{
  "hex": "#648bdd",
  "rgb": {
    "r": 100,
    "g": 139,
    "b": 221
  },
  "hsl": {
    "h": 220.661,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.64474,
    "c": 0.1309,
    "h": 263.9
  },
  "luminance": 0.26395
}

Semantic roles & 50–950 ramp

primary

#648BDD

secondary

#E4D6B9

accent

#921ACC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #648BDD

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

Preview Lab → · Contrast checker → · Palette generator →