#646ADA#646ADA

#646ADA is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.7% C 0.168 H 277.4°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646ADA
RGB	rgb(100, 106, 218)
HSL	hsl(237, 61%, 62%)
HSV	hsv(237, 54%, 85%)
CMYK	cmyk(54.1%, 51.4%, 0%, 14.5%)
CIE-LAB	lab(49.59, 29.13, -58.36)
CIE-LCH	lch(49.59, 65.23, 296.53°)
OKLab	oklab(57.68% 0.0217 -0.1668)
OKLCH	oklch(57.68% 0.168 277.4)
XYZ	xyz(23.0604, 18.0778, 68.5903)
Luminance	0.1808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ADA #DAD464

analogous

#64A5DA #646ADA #9964DA

triadic

#646ADA #DA646A #6ADA64

tetradic

#646ADA #DA64A5 #DAD464 #64DA99

square

#646ADA #DA64A5 #DAD464 #64DA99

split-complementary

#646ADA #DA9964 #A5DA64

monochromatic

#262C9E #333BCE #646ADA #9599E6 #C7C9F2

Accessibility & contrast

On white

4.55

#646ADA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#646ADA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ADA

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ADA	#FFFFFF	#000000	##000000
##646ADA	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E7BDE

Deuteranopia (green-blind)

#1B71D8

Tritanopia (blue-blind)

#2A8398

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646ada;
/* rgb */ color: rgb(100, 106, 218);
/* oklch */ color: oklch(57.7% 0.168 277.4);

Tailwind

colors: {
  custom: {
    50: '#9994e6',
    500: '#646ada',
    950: '#000000',
  },
}

SCSS

$custom: #646ada;
$custom-light: #9994e6;
$custom-dark: #000000;

JSON

{
  "hex": "#646ada",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 218
  },
  "hsl": {
    "h": 236.949,
    "s": 61.458,
    "l": 62.353
  },
  "oklch": {
    "l": 0.57685,
    "c": 0.16817,
    "h": 277.4
  },
  "luminance": 0.18079
}

Semantic roles & 50–950 ramp

primary

#646ADA

secondary

#E2E0B7

accent

#C01CC9

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646ADA

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

Preview Lab → · Contrast checker → · Palette generator →