#646AA9#646AA9

#646AA9 is a mid, moderate blue. Relative luminance 0.159; OKLCH L 54.7% C 0.098 H 278.5°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#646AA9
RGB	rgb(100, 106, 169)
HSL	hsl(235, 29%, 53%)
HSV	hsv(235, 41%, 66%)
CMYK	cmyk(40.8%, 37.3%, 0%, 33.7%)
CIE-LAB	lab(46.82, 14.05, -34.54)
CIE-LCH	lch(46.82, 37.28, 292.14°)
OKLab	oklab(54.68% 0.0145 -0.097)
OKLCH	oklch(54.68% 0.098 278.5)
XYZ	xyz(17.5689, 15.8812, 39.6681)
Luminance	0.1588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AA9 #A9A364

analogous

#648CA9 #646AA9 #8164A9

triadic

#646AA9 #A9646A #6AA964

tetradic

#646AA9 #A9648C #A9A364 #64A981

square

#646AA9 #A9648C #A9A364 #64A981

split-complementary

#646AA9 #A98164 #8CA964

monochromatic

#34385E #4A4F86 #646AA9 #8B90BF #B3B6D5

Accessibility & contrast

On white

5.03

#646AA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#646AA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646AA9

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AA9	#FFFFFF	#000000	##FFFFFF
##646AA9	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5572AC

Deuteranopia (green-blind)

#506CA8

Tritanopia (blue-blind)

#4F7681

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #646aa9;
/* rgb */ color: rgb(100, 106, 169);
/* oklch */ color: oklch(54.7% 0.098 278.5);

Tailwind

colors: {
  custom: {
    50: '#9394c3',
    500: '#646aa9',
    950: '#000000',
  },
}

SCSS

$custom: #646aa9;
$custom-light: #9394c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646aa9",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 169
  },
  "hsl": {
    "h": 234.783,
    "s": 28.631,
    "l": 52.745
  },
  "oklch": {
    "l": 0.54682,
    "c": 0.09805,
    "h": 278.5
  },
  "luminance": 0.15882
}

Semantic roles & 50–950 ramp

primary

#646AA9

secondary

#C3C1A5

accent

#BC63C5

background

#F9F9FC

surface

#F1F1F8

border

#CBCBD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646AA9

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

Preview Lab → · Contrast checker → · Palette generator →