#646ADD#646ADD

#646ADD is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.9% C 0.172 H 277.3°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#646ADD
RGB	rgb(100, 106, 221)
HSL	hsl(237, 64%, 63%)
HSV	hsv(237, 55%, 87%)
CMYK	cmyk(54.8%, 52%, 0%, 13.3%)
CIE-LAB	lab(49.78, 30.09, -59.75)
CIE-LCH	lch(49.78, 66.90, 296.73°)
OKLab	oklab(57.89% 0.0219 -0.1708)
OKLCH	oklch(57.89% 0.172 277.3)
XYZ	xyz(23.4566, 18.2363, 70.6765)
Luminance	0.1824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ADD #DDD764

analogous

#64A6DD #646ADD #9A64DD

triadic

#646ADD #DD646A #6ADD64

tetradic

#646ADD #DD64A6 #DDD764 #64DD9A

square

#646ADD #DD64A6 #DDD764 #64DD9A

split-complementary

#646ADD #DD9A64 #A6DD64

monochromatic

#242AA3 #323AD2 #646ADD #969AE8 #C8CAF3

Accessibility & contrast

On white

4.52

#646ADD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#646ADD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ADD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ADD	#FFFFFF	#000000	##000000
##646ADD	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A7BE1

Deuteranopia (green-blind)

#1272DB

Tritanopia (blue-blind)

#268499

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646add;
/* rgb */ color: rgb(100, 106, 221);
/* oklch */ color: oklch(57.9% 0.172 277.3);

Tailwind

colors: {
  custom: {
    50: '#9994e8',
    500: '#646add',
    950: '#000000',
  },
}

SCSS

$custom: #646add;
$custom-light: #9994e8;
$custom-dark: #000000;

JSON

{
  "hex": "#646add",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 221
  },
  "hsl": {
    "h": 237.025,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.57889,
    "c": 0.17225,
    "h": 277.3
  },
  "luminance": 0.18238
}

Semantic roles & 50–950 ramp

primary

#646ADD

secondary

#E4E2B9

accent

#C31ACC

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646ADD

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

Preview Lab → · Contrast checker → · Palette generator →