#647BD4#647BD4

#647BD4 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.6% C 0.138 H 270.9°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#647BD4
RGB	rgb(100, 123, 212)
HSL	hsl(228, 57%, 61%)
HSV	hsv(228, 53%, 83%)
CMYK	cmyk(52.8%, 42%, 0%, 16.9%)
CIE-LAB	lab(53.63, 16.86, -48.50)
CIE-LCH	lch(53.63, 51.35, 289.17°)
OKLab	oklab(60.64% 0.0022 -0.1376)
OKLCH	oklch(60.64% 0.138 270.9)
XYZ	xyz(24.2183, 21.6270, 65.1728)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BD4 #D4BD64

analogous

#64B3D4 #647BD4 #8564D4

triadic

#647BD4 #D4647B #7BD464

tetradic

#647BD4 #D464B3 #D4BD64 #64D485

square

#647BD4 #D464B3 #D4BD64 #64D485

split-complementary

#647BD4 #D48564 #B3D464

monochromatic

#293F94 #3654C4 #647BD4 #94A4E1 #C4CDEF

Accessibility & contrast

On white

3.94

#647BD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#647BD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BD4

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BD4	#FFFFFF	#000000	##000000
##647BD4	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5685D7

Deuteranopia (green-blind)

#497CD2

Tritanopia (blue-blind)

#2E8E9D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #647bd4;
/* rgb */ color: rgb(100, 123, 212);
/* oklch */ color: oklch(60.6% 0.138 270.9);

Tailwind

colors: {
  custom: {
    50: '#97a0e2',
    500: '#647bd4',
    950: '#000000',
  },
}

SCSS

$custom: #647bd4;
$custom-light: #97a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#647bd4",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 212
  },
  "hsl": {
    "h": 227.679,
    "s": 56.566,
    "l": 61.176
  },
  "oklch": {
    "l": 0.60638,
    "c": 0.13767,
    "h": 270.9
  },
  "luminance": 0.21629
}

Semantic roles & 50–950 ramp

primary

#647BD4

secondary

#DFD6B5

accent

#A321C4

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #647BD4

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

Preview Lab → · Contrast checker → · Palette generator →