#647BDB#647BDB

#647BDB is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.147 H 271.3°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#647BDB
RGB	rgb(100, 123, 219)
HSL	hsl(228, 62%, 63%)
HSV	hsv(228, 54%, 86%)
CMYK	cmyk(54.3%, 43.8%, 0%, 14.1%)
CIE-LAB	lab(54.01, 19.09, -51.84)
CIE-LCH	lch(54.01, 55.24, 290.21°)
OKLab	oklab(61.06% 0.0034 -0.1474)
OKLCH	oklch(61.06% 0.147 271.3)
XYZ	xyz(25.1205, 21.9879, 69.9245)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BDB #DBC464

analogous

#64B7DB #647BDB #8864DB

triadic

#647BDB #DB647B #7BDB64

tetradic

#647BDB #DB64B7 #DBC464 #64DB88

square

#647BDB #DB64B7 #DBC464 #64DB88

split-complementary

#647BDB #DB8864 #B7DB64

monochromatic

#253DA0 #3251CF #647BDB #96A5E7 #C7D0F2

Accessibility & contrast

On white

3.89

#647BDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#647BDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BDB

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BDB	#FFFFFF	#000000	##000000
##647BDB	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5187DF

Deuteranopia (green-blind)

#437CD9

Tritanopia (blue-blind)

#2590A0

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #647bdb;
/* rgb */ color: rgb(100, 123, 219);
/* oklch */ color: oklch(61.1% 0.147 271.3);

Tailwind

colors: {
  custom: {
    50: '#98a0e7',
    500: '#647bdb',
    950: '#000000',
  },
}

SCSS

$custom: #647bdb;
$custom-light: #98a0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#647bdb",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 219
  },
  "hsl": {
    "h": 228.403,
    "s": 62.304,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61058,
    "c": 0.14747,
    "h": 271.3
  },
  "luminance": 0.2199
}

Semantic roles & 50–950 ramp

primary

#647BDB

secondary

#E3DBB8

accent

#A81BCA

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #647BDB

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

Preview Lab → · Contrast checker → · Palette generator →