#647FDD#647FDD

#647FDD is a mid, vivid blue. Relative luminance 0.231; OKLCH L 62.0% C 0.145 H 269.7°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#647FDD
RGB	rgb(100, 127, 221)
HSL	hsl(227, 64%, 63%)
HSV	hsv(227, 55%, 87%)
CMYK	cmyk(54.8%, 42.5%, 0%, 13.3%)
CIE-LAB	lab(55.18, 17.30, -51.10)
CIE-LCH	lch(55.18, 53.95, 288.71°)
OKLab	oklab(61.99% -0.0007 -0.1452)
OKLCH	oklch(61.99% 0.145 269.7)
XYZ	xyz(25.8917, 23.1066, 71.4882)
Luminance	0.2311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647FDD #DDC264

analogous

#64BBDD #647FDD #8664DD

triadic

#647FDD #DD647F #7FDD64

tetradic

#647FDD #DD64BB #DDC264 #64DD86

square

#647FDD #DD64BB #DDC264 #64DD86

split-complementary

#647FDD #DD8664 #BBDD64

monochromatic

#2440A3 #3256D2 #647FDD #96A8E8 #C8D2F3

Accessibility & contrast

On white

3.74

#647FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#647FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647FDD

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647FDD	#FFFFFF	#000000	##000000
##647FDD	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#578AE1

Deuteranopia (green-blind)

#487FDB

Tritanopia (blue-blind)

#2094A3

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #647fdd;
/* rgb */ color: rgb(100, 127, 221);
/* oklch */ color: oklch(62.0% 0.145 269.7);

Tailwind

colors: {
  custom: {
    50: '#98a3e8',
    500: '#647fdd',
    950: '#000000',
  },
}

SCSS

$custom: #647fdd;
$custom-light: #98a3e8;
$custom-dark: #000000;

JSON

{
  "hex": "#647fdd",
  "rgb": {
    "r": 100,
    "g": 127,
    "b": 221
  },
  "hsl": {
    "h": 226.612,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61987,
    "c": 0.14524,
    "h": 269.7
  },
  "luminance": 0.23109
}

Semantic roles & 50–950 ramp

primary

#647FDD

secondary

#E4DAB9

accent

#A41ACC

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #647FDD

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

Preview Lab → · Contrast checker → · Palette generator →