#647CD5#647CD5

#647CD5 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.9% C 0.138 H 270.5°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#647CD5
RGB	rgb(100, 124, 213)
HSL	hsl(227, 57%, 61%)
HSV	hsv(227, 53%, 84%)
CMYK	cmyk(53.1%, 41.8%, 0%, 16.5%)
CIE-LAB	lab(53.95, 16.57, -48.56)
CIE-LCH	lch(53.95, 51.31, 288.84°)
OKLab	oklab(60.9% 0.0012 -0.1378)
OKLCH	oklch(60.9% 0.138 270.5)
XYZ	xyz(24.4695, 21.9270, 65.8808)
Luminance	0.2193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CD5 #D5BD64

analogous

#64B5D5 #647CD5 #8564D5

triadic

#647CD5 #D5647C #7CD564

tetradic

#647CD5 #D564B5 #D5BD64 #64D585

square

#647CD5 #D564B5 #D5BD64 #64D585

split-complementary

#647CD5 #D58564 #B5D564

monochromatic

#294096 #3654C6 #647CD5 #94A5E2 #C4CDEF

Accessibility & contrast

On white

3.90

#647CD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#647CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CD5

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CD5	#FFFFFF	#000000	##000000
##647CD5	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5786D8

Deuteranopia (green-blind)

#4A7CD3

Tritanopia (blue-blind)

#2C8F9E

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #647cd5;
/* rgb */ color: rgb(100, 124, 213);
/* oklch */ color: oklch(60.9% 0.138 270.5);

Tailwind

colors: {
  custom: {
    50: '#97a1e2',
    500: '#647cd5',
    950: '#000000',
  },
}

SCSS

$custom: #647cd5;
$custom-light: #97a1e2;
$custom-dark: #000000;

JSON

{
  "hex": "#647cd5",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 213
  },
  "hsl": {
    "h": 227.257,
    "s": 57.36,
    "l": 61.373
  },
  "oklch": {
    "l": 0.60901,
    "c": 0.13782,
    "h": 270.5
  },
  "luminance": 0.21929
}

Semantic roles & 50–950 ramp

primary

#647CD5

secondary

#E0D7B5

accent

#A221C5

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647CD5

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

Preview Lab → · Contrast checker → · Palette generator →