#646BD9#646BD9

#646BD9 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.8% C 0.165 H 277.1°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#646BD9
RGB	rgb(100, 107, 217)
HSL	hsl(236, 61%, 62%)
HSV	hsv(236, 54%, 85%)
CMYK	cmyk(53.9%, 50.7%, 0%, 14.9%)
CIE-LAB	lab(49.78, 28.21, -57.49)
CIE-LCH	lch(49.78, 64.04, 296.13°)
OKLab	oklab(57.8% 0.0206 -0.1642)
OKLCH	oklch(57.8% 0.165 277.1)
XYZ	xyz(23.0336, 18.2330, 67.9378)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD9 #D9D264

analogous

#64A6D9 #646BD9 #9764D9

triadic

#646BD9 #D9646B #6BD964

tetradic

#646BD9 #D964A6 #D9D264 #64D997

square

#646BD9 #D964A6 #D9D264 #64D997

split-complementary

#646BD9 #D99764 #A6D964

monochromatic

#262D9C #333CCD #646BD9 #959AE5 #C6C9F1

Accessibility & contrast

On white

4.52

#646BD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#646BD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD9	#FFFFFF	#000000	##000000
##646BD9	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)

#327BDD

Deuteranopia (green-blind)

#2172D7

Tritanopia (blue-blind)

#2B8498

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd9;
/* rgb */ color: rgb(100, 107, 217);
/* oklch */ color: oklch(57.8% 0.165 277.1);

Tailwind

colors: {
  custom: {
    50: '#9995e5',
    500: '#646bd9',
    950: '#000000',
  },
}

SCSS

$custom: #646bd9;
$custom-light: #9995e5;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd9",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 217
  },
  "hsl": {
    "h": 236.41,
    "s": 60.622,
    "l": 62.157
  },
  "oklch": {
    "l": 0.57805,
    "c": 0.16548,
    "h": 277.1
  },
  "luminance": 0.18234
}

Semantic roles & 50–950 ramp

primary

#646BD9

secondary

#E2DFB7

accent

#BE1DC8

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646BD9

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

Preview Lab → · Contrast checker → · Palette generator →