#648CF3#648CF3

#648CF3 is a light, vivid blue. Relative luminance 0.279; OKLCH L 65.9% C 0.160 H 266.2°. Best body text is #000000 at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#648CF3
RGB	rgb(100, 140, 243)
HSL	hsl(223, 86%, 67%)
HSV	hsv(223, 59%, 95%)
CMYK	cmyk(58.8%, 42.4%, 0%, 4.7%)
CIE-LAB	lab(59.83, 16.60, -55.94)
CIE-LCH	lch(59.83, 58.35, 286.53°)
OKLab	oklab(65.94% -0.0107 -0.1593)
OKLCH	oklch(65.94% 0.16 266.2)
XYZ	xyz(30.8058, 27.9340, 88.5450)
Luminance	0.2794 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648CF3 #F3CB64

analogous

#64D3F3 #648CF3 #8464F3

triadic

#648CF3 #F3648C #8CF364

tetradic

#648CF3 #F364D3 #F3CB64 #64F384

square

#648CF3 #F364D3 #F3CB64 #64F384

split-complementary

#648CF3 #F38464 #D3F364

monochromatic

#1045CD #2B62EF #648CF3 #9DB6F7 #D6E0FC

Accessibility & contrast

On white

3.19

#648CF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.59

#648CF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648CF3

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648CF3	#FFFFFF	#000000	##000000
##648CF3	1.00	3.19	6.59	6.59
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.59	21.00	1.00	1.00
##000000	6.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E97F7

Deuteranopia (green-blind)

#4A8AF1

Tritanopia (blue-blind)

#00A3B4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #648cf3;
/* rgb */ color: rgb(100, 140, 243);
/* oklch */ color: oklch(65.9% 0.160 266.2);

Tailwind

colors: {
  custom: {
    50: '#9badf7',
    500: '#648cf3',
    950: '#000000',
  },
}

SCSS

$custom: #648cf3;
$custom-light: #9badf7;
$custom-dark: #000000;

JSON

{
  "hex": "#648cf3",
  "rgb": {
    "r": 100,
    "g": 140,
    "b": 243
  },
  "hsl": {
    "h": 223.217,
    "s": 85.629,
    "l": 67.255
  },
  "oklch": {
    "l": 0.65945,
    "c": 0.15966,
    "h": 266.2
  },
  "luminance": 0.27937
}

Semantic roles & 50–950 ramp

primary

#648CF3

secondary

#F0E3C3

accent

#A403E2

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #648CF3

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

Preview Lab → · Contrast checker → · Palette generator →