#647CDF#647CDF

#647CDF is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.5% C 0.152 H 271.1°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#647CDF
RGB	rgb(100, 124, 223)
HSL	hsl(228, 66%, 63%)
HSV	hsv(228, 55%, 87%)
CMYK	cmyk(55.2%, 44.4%, 0%, 12.5%)
CIE-LAB	lab(54.50, 19.76, -53.31)
CIE-LCH	lch(54.50, 56.85, 290.34°)
OKLab	oklab(61.5% 0.0029 -0.1517)
OKLCH	oklch(61.5% 0.152 271.1)
XYZ	xyz(25.7781, 22.4505, 72.7727)
Luminance	0.2245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CDF #DFC764

analogous

#64B9DF #647CDF #8964DF

triadic

#647CDF #DF647C #7CDF64

tetradic

#647CDF #DF64B9 #DFC764 #64DF89

square

#647CDF #DF64B9 #DFC764 #64DF89

split-complementary

#647CDF #DF8964 #B9DF64

monochromatic

#223CA6 #3151D5 #647CDF #97A7E9 #C9D2F4

Accessibility & contrast

On white

3.82

#647CDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#647CDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CDF

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CDF	#FFFFFF	#000000	##000000
##647CDF	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5088E3

Deuteranopia (green-blind)

#407DDD

Tritanopia (blue-blind)

#1D92A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647cdf;
/* rgb */ color: rgb(100, 124, 223);
/* oklch */ color: oklch(61.5% 0.152 271.1);

Tailwind

colors: {
  custom: {
    50: '#99a1e9',
    500: '#647cdf',
    950: '#000000',
  },
}

SCSS

$custom: #647cdf;
$custom-light: #99a1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#647cdf",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 223
  },
  "hsl": {
    "h": 228.293,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61503,
    "c": 0.15177,
    "h": 271.1
  },
  "luminance": 0.22452
}

Semantic roles & 50–950 ramp

primary

#647CDF

secondary

#E5DDB9

accent

#AA18CE

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0E16

muted

#7E7E84

Preview Lab

Preview with #647CDF

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

Preview Lab → · Contrast checker → · Palette generator →