#647BDE#647BDE

#647BDE is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.2% C 0.152 H 271.4°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#647BDE
RGB	rgb(100, 123, 222)
HSL	hsl(229, 65%, 63%)
HSV	hsv(229, 55%, 87%)
CMYK	cmyk(55%, 44.6%, 0%, 12.9%)
CIE-LAB	lab(54.18, 20.05, -53.26)
CIE-LCH	lch(54.18, 56.90, 290.63°)
OKLab	oklab(61.24% 0.0038 -0.1516)
OKLCH	oklch(61.24% 0.152 271.4)
XYZ	xyz(25.5190, 22.1473, 72.0232)
Luminance	0.2215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#647BDE #DEC764

analogous

#64B8DE #647BDE #8A64DE

triadic

#647BDE #DE647B #7BDE64

tetradic

#647BDE #DE64B8 #DEC764 #64DE8A

square

#647BDE #DE64B8 #DEC764 #64DE8A

split-complementary

#647BDE #DE8A64 #B8DE64

monochromatic

#233BA5 #3250D3 #647BDE #96A6E9 #C9D1F3

Accessibility & contrast

On white

3.87

#647BDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#647BDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647BDE

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##647BDE	#FFFFFF	#000000	##000000
##647BDE	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F87E2

Deuteranopia (green-blind)

#407DDC

Tritanopia (blue-blind)

#2091A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #647bde;
/* rgb */ color: rgb(100, 123, 222);
/* oklch */ color: oklch(61.2% 0.152 271.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#647bde",
  "rgb": {
    "r": 100,
    "g": 123,
    "b": 222
  },
  "hsl": {
    "h": 228.689,
    "s": 64.894,
    "l": 63.137
  },
  "oklch": {
    "l": 0.61241,
    "c": 0.15165,
    "h": 271.4
  },
  "luminance": 0.22149
}

Semantic roles & 50–950 ramp

primary

#647BDE

secondary

#E5DDB9

accent

#AB19CD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0E16

muted

#7E7E84

Preview Lab

Preview with #647BDE

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

Preview Lab → · Contrast checker → · Palette generator →