#647BDF#647BDF

#647BDF is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.3% C 0.153 H 271.5°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#647BDF
RGB	rgb(100, 123, 223)
HSL	hsl(229, 66%, 63%)
HSV	hsv(229, 55%, 87%)
CMYK	cmyk(55.2%, 44.8%, 0%, 12.5%)
CIE-LAB	lab(54.24, 20.37, -53.73)
CIE-LCH	lch(54.24, 57.46, 290.76°)
OKLab	oklab(61.3% 0.004 -0.153)
OKLCH	oklch(61.3% 0.153 271.5)
XYZ	xyz(25.6534, 22.2011, 72.7311)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BDF #DFC864

analogous

#64B9DF #647BDF #8A64DF

triadic

#647BDF #DF647B #7BDF64

tetradic

#647BDF #DF64B9 #DFC864 #64DF8A

square

#647BDF #DF64B9 #DFC864 #64DF8A

split-complementary

#647BDF #DF8A64 #B9DF64

monochromatic

#223BA6 #3150D5 #647BDF #97A6E9 #C9D1F4

Accessibility & contrast

On white

3.86

#647BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#647BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BDF

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BDF	#FFFFFF	#000000	##000000
##647BDF	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E87E3

Deuteranopia (green-blind)

#3F7DDD

Tritanopia (blue-blind)

#1E91A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647bdf;
/* rgb */ color: rgb(100, 123, 223);
/* oklch */ color: oklch(61.3% 0.153 271.5);

Tailwind

colors: {
  custom: {
    50: '#99a0e9',
    500: '#647bdf',
    950: '#000000',
  },
}

SCSS

$custom: #647bdf;
$custom-light: #99a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#647bdf",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 223
  },
  "hsl": {
    "h": 228.78,
    "s": 65.775,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61303,
    "c": 0.15303,
    "h": 271.5
  },
  "luminance": 0.22203
}

Semantic roles & 50–950 ramp

primary

#647BDF

secondary

#E5DDB9

accent

#AC18CE

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0E16

muted

#7E7E84

Preview Lab

Preview with #647BDF

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

Preview Lab → · Contrast checker → · Palette generator →