#647CDC#647CDC

#647CDC is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.3% C 0.148 H 270.9°. Best body text is #000000 at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#647CDC
RGB	rgb(100, 124, 220)
HSL	hsl(228, 63%, 63%)
HSV	hsv(228, 55%, 86%)
CMYK	cmyk(54.5%, 43.6%, 0%, 13.7%)
CIE-LAB	lab(54.33, 18.80, -51.89)
CIE-LCH	lch(54.33, 55.19, 289.92°)
OKLab	oklab(61.32% 0.0024 -0.1476)
OKLCH	oklch(61.32% 0.148 270.9)
XYZ	xyz(25.3772, 22.2901, 70.6614)
Luminance	0.2229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CDC #DCC464

analogous

#64B8DC #647CDC #8864DC

triadic

#647CDC #DC647C #7CDC64

tetradic

#647CDC #DC64B8 #DCC464 #64DC88

square

#647CDC #DC64B8 #DCC464 #64DC88

split-complementary

#647CDC #DC8864 #B8DC64

monochromatic

#243DA1 #3252D1 #647CDC #96A6E7 #C8D0F3

Accessibility & contrast

On white

3.85

#647CDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.46

#647CDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CDC

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CDC	#FFFFFF	#000000	##000000
##647CDC	1.00	3.85	5.46	5.46
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.46	21.00	1.00	1.00
##000000	5.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5287E0

Deuteranopia (green-blind)

#447DDA

Tritanopia (blue-blind)

#2391A1

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647cdc;
/* rgb */ color: rgb(100, 124, 220);
/* oklch */ color: oklch(61.3% 0.148 270.9);

Tailwind

colors: {
  custom: {
    50: '#98a1e7',
    500: '#647cdc',
    950: '#000000',
  },
}

SCSS

$custom: #647cdc;
$custom-light: #98a1e7;
$custom-dark: #000000;

JSON

{
  "hex": "#647cdc",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 220
  },
  "hsl": {
    "h": 228,
    "s": 63.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.6132,
    "c": 0.1476,
    "h": 270.9
  },
  "luminance": 0.22292
}

Semantic roles & 50–950 ramp

primary

#647CDC

secondary

#E4DBB8

accent

#A81BCB

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #647CDC

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

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