#648FFB#648FFB

#648FFB is a light, vivid blue. Relative luminance 0.293; OKLCH L 67.0% C 0.167 H 265.8°. Best body text is #000000 at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#648FFB
RGB	rgb(100, 143, 251)
HSL	hsl(223, 95%, 69%)
HSV	hsv(223, 60%, 98%)
CMYK	cmyk(60.2%, 43%, 0%, 1.6%)
CIE-LAB	lab(61.06, 17.43, -58.38)
CIE-LCH	lch(61.06, 60.92, 286.62°)
OKLab	oklab(67.03% -0.0123 -0.1664)
OKLCH	oklch(67.03% 0.167 265.8)
XYZ	xyz(32.4846, 29.3165, 95.1949)
Luminance	0.2932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648FFB #FBD064

analogous

#64DBFB #648FFB #8564FB

triadic

#648FFB #FB648F #8FFB64

tetradic

#648FFB #FB64DB #FBD064 #64FB85

square

#648FFB #FB64DB #FBD064 #64FB85

split-complementary

#648FFB #FB8564 #DBFB64

monochromatic

#0644DF #2864F9 #648FFB #A0BAFD #DBE5FE

Accessibility & contrast

On white

3.06

#648FFB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.86

#648FFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648FFB

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648FFB	#FFFFFF	#000000	##000000
##648FFB	1.00	3.06	6.86	6.86
#FFFFFF	3.06	1.00	21.00	21.00
#000000	6.86	21.00	1.00	1.00
##000000	6.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E9BFF

Deuteranopia (green-blind)

#478DF9

Tritanopia (blue-blind)

#00A7B9

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #648ffb;
/* rgb */ color: rgb(100, 143, 251);
/* oklch */ color: oklch(67.0% 0.167 265.8);

Tailwind

colors: {
  custom: {
    50: '#9caffd',
    500: '#648ffb',
    950: '#000000',
  },
}

SCSS

$custom: #648ffb;
$custom-light: #9caffd;
$custom-dark: #000000;

JSON

{
  "hex": "#648ffb",
  "rgb": {
    "r": 100,
    "g": 143,
    "b": 251
  },
  "hsl": {
    "h": 222.914,
    "s": 94.969,
    "l": 68.824
  },
  "oklch": {
    "l": 0.67033,
    "c": 0.16688,
    "h": 265.8
  },
  "luminance": 0.29319
}

Semantic roles & 50–950 ramp

primary

#648FFB

secondary

#F4E7C7

accent

#A400E6

background

#FAFAFF

surface

#F4F4FF

border

#CECED7

text

#0F1018

muted

#7F7F86

Preview Lab

Preview with #648FFB

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

Preview Lab → · Contrast checker → · Palette generator →