#647DDB#647DDB

#647DDB is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.5% C 0.145 H 270.5°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#647DDB
RGB	rgb(100, 125, 219)
HSL	hsl(227, 62%, 63%)
HSV	hsv(227, 54%, 86%)
CMYK	cmyk(54.3%, 42.9%, 0%, 14.1%)
CIE-LAB	lab(54.54, 17.88, -51.00)
CIE-LCH	lch(54.54, 54.04, 289.32°)
OKLab	oklab(61.46% 0.0012 -0.1449)
OKLCH	oklch(61.46% 0.145 270.5)
XYZ	xyz(25.3711, 22.4892, 70.0080)
Luminance	0.2249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647DDB #DBC264

analogous

#64B9DB #647DDB #8664DB

triadic

#647DDB #DB647D #7DDB64

tetradic

#647DDB #DB64B9 #DBC264 #64DB86

square

#647DDB #DB64B9 #DBC264 #64DB86

split-complementary

#647DDB #DB8664 #B9DB64

monochromatic

#253FA0 #3253CF #647DDB #96A7E7 #C7D0F2

Accessibility & contrast

On white

3.82

#647DDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#647DDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DDB

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647DDB	#FFFFFF	#000000	##000000
##647DDB	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5588DF

Deuteranopia (green-blind)

#467ED9

Tritanopia (blue-blind)

#2492A1

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647ddb;
/* rgb */ color: rgb(100, 125, 219);
/* oklch */ color: oklch(61.5% 0.145 270.5);

Tailwind

colors: {
  custom: {
    50: '#98a2e7',
    500: '#647ddb',
    950: '#000000',
  },
}

SCSS

$custom: #647ddb;
$custom-light: #98a2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#647ddb",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 219
  },
  "hsl": {
    "h": 227.395,
    "s": 62.304,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61462,
    "c": 0.14495,
    "h": 270.5
  },
  "luminance": 0.22491
}

Semantic roles & 50–950 ramp

primary

#647DDB

secondary

#E3DAB8

accent

#A51BCA

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #647DDB

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

Preview Lab → · Contrast checker → · Palette generator →