#647CDB#647CDB

#647CDB is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.3% C 0.146 H 270.9°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#647CDB
RGB	rgb(100, 124, 219)
HSL	hsl(228, 62%, 63%)
HSV	hsv(228, 54%, 86%)
CMYK	cmyk(54.3%, 43.4%, 0%, 14.1%)
CIE-LAB	lab(54.28, 18.48, -51.42)
CIE-LCH	lch(54.28, 54.64, 289.77°)
OKLab	oklab(61.26% 0.0023 -0.1462)
OKLCH	oklch(61.26% 0.146 270.9)
XYZ	xyz(25.2452, 22.2373, 69.9660)
Luminance	0.2224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647CDB #DBC364

analogous

#64B8DB #647CDB #8764DB

triadic

#647CDB #DB647C #7CDB64

tetradic

#647CDB #DB64B8 #DBC364 #64DB87

square

#647CDB #DB64B8 #DBC364 #64DB87

split-complementary

#647CDB #DB8764 #B8DB64

monochromatic

#253EA0 #3252CF #647CDB #96A6E7 #C7D0F2

Accessibility & contrast

On white

3.85

#647CDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#647CDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CDB

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647CDB	#FFFFFF	#000000	##000000
##647CDB	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5387DF

Deuteranopia (green-blind)

#457DD9

Tritanopia (blue-blind)

#2491A1

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647cdb;
/* rgb */ color: rgb(100, 124, 219);
/* oklch */ color: oklch(61.3% 0.146 270.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#647cdb",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 219
  },
  "hsl": {
    "h": 227.899,
    "s": 62.304,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61259,
    "c": 0.14621,
    "h": 270.9
  },
  "luminance": 0.22239
}

Semantic roles & 50–950 ramp

primary

#647CDB

secondary

#E3DAB8

accent

#A71BCA

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #647CDB

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

Preview Lab → · Contrast checker → · Palette generator →