#647FDC#647FDC

#647FDC is a mid, vivid blue. Relative luminance 0.231; OKLCH L 61.9% C 0.144 H 269.6°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#647FDC
RGB	rgb(100, 127, 220)
HSL	hsl(227, 63%, 63%)
HSV	hsv(227, 55%, 86%)
CMYK	cmyk(54.5%, 42.3%, 0%, 13.7%)
CIE-LAB	lab(55.13, 16.98, -50.63)
CIE-LCH	lch(55.13, 53.40, 288.55°)
OKLab	oklab(61.93% -0.0009 -0.1438)
OKLCH	oklch(61.93% 0.144 269.6)
XYZ	xyz(25.7589, 23.0535, 70.7887)
Luminance	0.2306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FDC #DCC164

analogous

#64BBDC #647FDC #8564DC

triadic

#647FDC #DC647F #7FDC64

tetradic

#647FDC #DC64BB #DCC164 #64DC85

square

#647FDC #DC64BB #DCC164 #64DC85

split-complementary

#647FDC #DC8564 #BBDC64

monochromatic

#2440A1 #3256D1 #647FDC #96A8E7 #C8D1F3

Accessibility & contrast

On white

3.74

#647FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#647FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FDC

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FDC	#FFFFFF	#000000	##000000
##647FDC	1.00	3.74	5.61	5.61
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#578AE0

Deuteranopia (green-blind)

#497FDA

Tritanopia (blue-blind)

#2293A3

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #647fdc;
/* rgb */ color: rgb(100, 127, 220);
/* oklch */ color: oklch(61.9% 0.144 269.6);

Tailwind

colors: {
  custom: {
    50: '#98a3e7',
    500: '#647fdc',
    950: '#000000',
  },
}

SCSS

$custom: #647fdc;
$custom-light: #98a3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#647fdc",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 220
  },
  "hsl": {
    "h": 226.5,
    "s": 63.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61928,
    "c": 0.14384,
    "h": 269.6
  },
  "luminance": 0.23055
}

Semantic roles & 50–950 ramp

primary

#647FDC

secondary

#E4DAB8

accent

#A31BCB

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #647FDC

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

Preview Lab → · Contrast checker → · Palette generator →