#646CAA#646CAA

#646CAA is a mid, moderate blue. Relative luminance 0.163; OKLCH L 55.2% C 0.097 H 277.1°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#646CAA
RGB	rgb(100, 108, 170)
HSL	hsl(233, 29%, 53%)
HSV	hsv(233, 41%, 67%)
CMYK	cmyk(41.2%, 36.5%, 0%, 33.3%)
CIE-LAB	lab(47.41, 13.12, -34.19)
CIE-LCH	lch(47.41, 36.62, 290.99°)
OKLab	oklab(55.15% 0.012 -0.096)
OKLCH	oklch(55.15% 0.097 277.1)
XYZ	xyz(17.8716, 16.3359, 40.2339)
Luminance	0.1634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CAA #AAA264

analogous

#648FAA #646CAA #7F64AA

triadic

#646CAA #AA646C #6CAA64

tetradic

#646CAA #AA648F #AAA264 #64AA7F

square

#646CAA #AA648F #AAA264 #64AA7F

split-complementary

#646CAA #AA7F64 #8FAA64

monochromatic

#34395F #4A5187 #646CAA #8C91C0 #B3B7D5

Accessibility & contrast

On white

4.92

#646CAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#646CAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CAA

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CAA	#FFFFFF	#000000	##FFFFFF
##646CAA	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5773AC

Deuteranopia (green-blind)

#526EA9

Tritanopia (blue-blind)

#4E7883

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646caa;
/* rgb */ color: rgb(100, 108, 170);
/* oklch */ color: oklch(55.2% 0.097 277.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#646caa",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 170
  },
  "hsl": {
    "h": 233.143,
    "s": 29.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55154,
    "c": 0.09672,
    "h": 277.1
  },
  "luminance": 0.16337
}

Semantic roles & 50–950 ramp

primary

#646CAA

secondary

#C4C1A6

accent

#BA62C5

background

#F9F9FC

surface

#F2F1F8

border

#CCCBD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CAA

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

Preview Lab → · Contrast checker → · Palette generator →