#648FF4#648FF4

#648FF4 is a light, vivid blue. Relative luminance 0.289; OKLCH L 66.6% C 0.158 H 265.0°. Best body text is #000000 at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#648FF4
RGB	rgb(100, 143, 244)
HSL	hsl(222, 87%, 67%)
HSV	hsv(222, 59%, 96%)
CMYK	cmyk(59%, 41.4%, 0%, 4.3%)
CIE-LAB	lab(60.68, 15.14, -55.14)
CIE-LCH	lch(60.68, 57.18, 285.36°)
OKLab	oklab(66.62% -0.0136 -0.1569)
OKLCH	oklch(66.62% 0.158 265)
XYZ	xyz(31.4015, 28.8833, 89.4906)
Luminance	0.2889 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648FF4 #F4C964

analogous

#64D7F4 #648FF4 #8164F4

triadic

#648FF4 #F4648F #8FF464

tetradic

#648FF4 #F464D7 #F4C964 #64F481

square

#648FF4 #F464D7 #F4C964 #64F481

split-complementary

#648FF4 #F48164 #D7F464

monochromatic

#0F48CF #2B66F0 #648FF4 #9DB8F8 #D6E2FC

Accessibility & contrast

On white

3.10

#648FF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.78

#648FF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648FF4

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648FF4	#FFFFFF	#000000	##000000
##648FF4	1.00	3.10	6.78	6.78
#FFFFFF	3.10	1.00	21.00	21.00
#000000	6.78	21.00	1.00	1.00
##000000	6.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6299F8

Deuteranopia (green-blind)

#4E8CF2

Tritanopia (blue-blind)

#00A6B6

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #648ff4;
/* rgb */ color: rgb(100, 143, 244);
/* oklch */ color: oklch(66.6% 0.158 265.0);

Tailwind

colors: {
  custom: {
    50: '#9baff8',
    500: '#648ff4',
    950: '#000000',
  },
}

SCSS

$custom: #648ff4;
$custom-light: #9baff8;
$custom-dark: #000000;

JSON

{
  "hex": "#648ff4",
  "rgb": {
    "r": 100,
    "g": 143,
    "b": 244
  },
  "hsl": {
    "h": 222.083,
    "s": 86.747,
    "l": 67.451
  },
  "oklch": {
    "l": 0.66616,
    "c": 0.1575,
    "h": 265
  },
  "luminance": 0.28886
}

Semantic roles & 50–950 ramp

primary

#648FF4

secondary

#F0E3C3

accent

#A002E3

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #648FF4

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

Preview Lab → · Contrast checker → · Palette generator →