#646FA9#646FA9

#646FA9 is a mid, moderate blue. Relative luminance 0.169; OKLCH L 55.7% C 0.091 H 274.9°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#646FA9
RGB	rgb(100, 111, 169)
HSL	hsl(230, 29%, 53%)
HSV	hsv(230, 41%, 66%)
CMYK	cmyk(40.8%, 34.3%, 0%, 33.7%)
CIE-LAB	lab(48.19, 10.99, -32.39)
CIE-LCH	lch(48.19, 34.20, 288.75°)
OKLab	oklab(55.74% 0.0077 -0.0907)
OKLCH	oklch(55.74% 0.091 274.9)
XYZ	xyz(18.0993, 16.9420, 39.8449)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA9 #A99E64

analogous

#6491A9 #646FA9 #7B64A9

triadic

#646FA9 #A9646F #6FA964

tetradic

#646FA9 #A96491 #A99E64 #64A97B

square

#646FA9 #A96491 #A99E64 #64A97B

split-complementary

#646FA9 #A97B64 #91A964

monochromatic

#343B5E #4A5486 #646FA9 #8B94BF #B3B8D5

Accessibility & contrast

On white

4.79

#646FA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#646FA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA9

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA9	#FFFFFF	#000000	##FFFFFF
##646FA9	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B75AB

Deuteranopia (green-blind)

#5670A8

Tritanopia (blue-blind)

#4E7B84

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646fa9;
/* rgb */ color: rgb(100, 111, 169);
/* oklch */ color: oklch(55.7% 0.091 274.9);

Tailwind

colors: {
  custom: {
    50: '#9398c3',
    500: '#646fa9',
    950: '#000000',
  },
}

SCSS

$custom: #646fa9;
$custom-light: #9398c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa9",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 169
  },
  "hsl": {
    "h": 230.435,
    "s": 28.631,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55735,
    "c": 0.09107,
    "h": 274.9
  },
  "luminance": 0.16943
}

Semantic roles & 50–950 ramp

primary

#646FA9

secondary

#C3BFA5

accent

#B563C5

background

#F9F9FC

surface

#F1F2F8

border

#CBCCD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA9

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

Preview Lab → · Contrast checker → · Palette generator →