#646ADE#646ADE

#646ADE is a mid, vivid blue. Relative luminance 0.183; OKLCH L 58.0% C 0.174 H 277.3°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#646ADE
RGB	rgb(100, 106, 222)
HSL	hsl(237, 65%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(55%, 52.3%, 0%, 12.9%)
CIE-LAB	lab(49.85, 30.40, -60.21)
CIE-LCH	lch(49.85, 67.45, 296.79°)
OKLab	oklab(57.96% 0.022 -0.1722)
OKLCH	oklch(57.96% 0.174 277.3)
XYZ	xyz(23.5902, 18.2897, 71.3803)
Luminance	0.1829 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ADE #DED864

analogous

#64A7DE #646ADE #9B64DE

triadic

#646ADE #DE646A #6ADE64

tetradic

#646ADE #DE64A7 #DED864 #64DE9B

square

#646ADE #DE64A7 #DED864 #64DE9B

split-complementary

#646ADE #DE9B64 #A7DE64

monochromatic

#2329A5 #3239D3 #646ADE #969BE9 #C9CBF3

Accessibility & contrast

On white

4.51

#646ADE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#646ADE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ADE

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ADE	#FFFFFF	#000000	##000000
##646ADE	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#287CE2

Deuteranopia (green-blind)

#0E72DC

Tritanopia (blue-blind)

#25849A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646ade;
/* rgb */ color: rgb(100, 106, 222);
/* oklch */ color: oklch(58.0% 0.174 277.3);

Tailwind

colors: {
  custom: {
    50: '#9994e9',
    500: '#646ade',
    950: '#000000',
  },
}

SCSS

$custom: #646ade;
$custom-light: #9994e9;
$custom-dark: #000000;

JSON

{
  "hex": "#646ade",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 222
  },
  "hsl": {
    "h": 237.049,
    "s": 64.894,
    "l": 63.137
  },
  "oklch": {
    "l": 0.57958,
    "c": 0.17361,
    "h": 277.3
  },
  "luminance": 0.18291
}

Semantic roles & 50–950 ramp

primary

#646ADE

secondary

#E5E3B9

accent

#C419CD

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646ADE

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

Preview Lab → · Contrast checker → · Palette generator →