#647DDF#647DDF

#647DDF is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.7% C 0.151 H 270.7°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#647DDF
RGB	rgb(100, 125, 223)
HSL	hsl(228, 66%, 63%)
HSV	hsv(228, 55%, 87%)
CMYK	cmyk(55.2%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(54.76, 19.16, -52.89)
CIE-LCH	lch(54.76, 56.25, 289.91°)
OKLab	oklab(61.7% 0.0018 -0.1505)
OKLCH	oklch(61.7% 0.151 270.7)
XYZ	xyz(25.9040, 22.7024, 72.8147)
Luminance	0.2270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DDF #DFC664

analogous

#64BADF #647DDF #8864DF

triadic

#647DDF #DF647D #7DDF64

tetradic

#647DDF #DF64BA #DFC664 #64DF88

square

#647DDF #DF64BA #DFC664 #64DF88

split-complementary

#647DDF #DF8864 #BADF64

monochromatic

#223DA6 #3152D5 #647DDF #97A8E9 #C9D2F4

Accessibility & contrast

On white

3.79

#647DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#647DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DDF

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DDF	#FFFFFF	#000000	##000000
##647DDF	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5289E3

Deuteranopia (green-blind)

#427EDD

Tritanopia (blue-blind)

#1D93A3

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #647ddf;
/* rgb */ color: rgb(100, 125, 223);
/* oklch */ color: oklch(61.7% 0.151 270.7);

Tailwind

colors: {
  custom: {
    50: '#99a2e9',
    500: '#647ddf',
    950: '#000000',
  },
}

SCSS

$custom: #647ddf;
$custom-light: #99a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#647ddf",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 227.805,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61704,
    "c": 0.15051,
    "h": 270.7
  },
  "luminance": 0.22704
}

Semantic roles & 50–950 ramp

primary

#647DDF

secondary

#E5DCB9

accent

#A918CE

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0F16

muted

#7E7E84

Preview Lab

Preview with #647DDF

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

Preview Lab → · Contrast checker → · Palette generator →