#646CA9#646CA9

#646CA9 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 55.1% C 0.095 H 277.1°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#646CA9
RGB	rgb(100, 108, 169)
HSL	hsl(233, 29%, 53%)
HSV	hsv(233, 41%, 66%)
CMYK	cmyk(40.8%, 36.1%, 0%, 33.7%)
CIE-LAB	lab(47.36, 12.83, -33.68)
CIE-LCH	lch(47.36, 36.04, 290.85°)
OKLab	oklab(55.1% 0.0118 -0.0945)
OKLCH	oklch(55.1% 0.095 277.1)
XYZ	xyz(17.7774, 16.2982, 39.7376)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA9 #A9A164

analogous

#648FA9 #646CA9 #7E64A9

triadic

#646CA9 #A9646C #6CA964

tetradic

#646CA9 #A9648F #A9A164 #64A97E

square

#646CA9 #A9648F #A9A164 #64A97E

split-complementary

#646CA9 #A97E64 #8FA964

monochromatic

#34395E #4A5186 #646CA9 #8B91BF #B3B7D5

Accessibility & contrast

On white

4.93

#646CA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#646CA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA9

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA9	#FFFFFF	#000000	##FFFFFF
##646CA9	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5773AB

Deuteranopia (green-blind)

#526EA8

Tritanopia (blue-blind)

#4F7882

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca9;
/* rgb */ color: rgb(100, 108, 169);
/* oklch */ color: oklch(55.1% 0.095 277.1);

Tailwind

colors: {
  custom: {
    50: '#9396c3',
    500: '#646ca9',
    950: '#000000',
  },
}

SCSS

$custom: #646ca9;
$custom-light: #9396c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca9",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 169
  },
  "hsl": {
    "h": 233.043,
    "s": 28.631,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55101,
    "c": 0.09522,
    "h": 277.1
  },
  "luminance": 0.16299
}

Semantic roles & 50–950 ramp

primary

#646CA9

secondary

#C3C0A5

accent

#BA63C5

background

#F9F9FC

surface

#F1F1F8

border

#CBCBD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA9

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

Preview Lab → · Contrast checker → · Palette generator →