#646DD9#646DD9

#646DD9 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 58.2% C 0.163 H 276.5°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#646DD9
RGB	rgb(100, 109, 217)
HSL	hsl(235, 61%, 62%)
HSV	hsv(235, 54%, 85%)
CMYK	cmyk(53.9%, 49.8%, 0%, 14.9%)
CIE-LAB	lab(50.28, 26.98, -56.68)
CIE-LCH	lch(50.28, 62.78, 295.46°)
OKLab	oklab(58.18% 0.0184 -0.1618)
OKLCH	oklch(58.18% 0.163 276.5)
XYZ	xyz(23.2446, 18.6548, 68.0081)
Luminance	0.1866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD9 #D9D064

analogous

#64A7D9 #646DD9 #9664D9

triadic

#646DD9 #D9646D #6DD964

tetradic

#646DD9 #D964A7 #D9D064 #64D996

square

#646DD9 #D964A7 #D9D064 #64D996

split-complementary

#646DD9 #D99664 #A7D964

monochromatic

#262F9C #333FCD #646DD9 #959BE5 #C6CAF1

Accessibility & contrast

On white

4.44

#646DD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#646DD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD9

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD9	#FFFFFF	#000000	##000000
##646DD9	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377DDD

Deuteranopia (green-blind)

#2773D7

Tritanopia (blue-blind)

#2B8599

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646dd9;
/* rgb */ color: rgb(100, 109, 217);
/* oklch */ color: oklch(58.2% 0.163 276.5);

Tailwind

colors: {
  custom: {
    50: '#9896e5',
    500: '#646dd9',
    950: '#000000',
  },
}

SCSS

$custom: #646dd9;
$custom-light: #9896e5;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd9",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 217
  },
  "hsl": {
    "h": 235.385,
    "s": 60.622,
    "l": 62.157
  },
  "oklch": {
    "l": 0.58185,
    "c": 0.16285,
    "h": 276.5
  },
  "luminance": 0.18656
}

Semantic roles & 50–950 ramp

primary

#646DD9

secondary

#E2DFB7

accent

#BB1DC8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646DD9

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

Preview Lab → · Contrast checker → · Palette generator →