#646AAA#646AAA

#646AAA is a mid, moderate blue. Relative luminance 0.159; OKLCH L 54.7% C 0.100 H 278.5°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#646AAA
RGB	rgb(100, 106, 170)
HSL	hsl(235, 29%, 53%)
HSV	hsv(235, 41%, 67%)
CMYK	cmyk(41.2%, 37.6%, 0%, 33.3%)
CIE-LAB	lab(46.87, 14.35, -35.04)
CIE-LCH	lch(46.87, 37.87, 292.26°)
OKLab	oklab(54.74% 0.0147 -0.0985)
OKLCH	oklch(54.74% 0.1 278.5)
XYZ	xyz(17.6631, 15.9189, 40.1644)
Luminance	0.1592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AAA #AAA464

analogous

#648DAA #646AAA #8164AA

triadic

#646AAA #AA646A #6AAA64

tetradic

#646AAA #AA648D #AAA464 #64AA81

square

#646AAA #AA648D #AAA464 #64AA81

split-complementary

#646AAA #AA8164 #8DAA64

monochromatic

#34385F #4A4F87 #646AAA #8C90C0 #B3B6D5

Accessibility & contrast

On white

5.02

#646AAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#646AAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646AAA

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AAA	#FFFFFF	#000000	##FFFFFF
##646AAA	1.00	5.02	4.18	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5472AD

Deuteranopia (green-blind)

#506DA8

Tritanopia (blue-blind)

#4E7782

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #646aaa;
/* rgb */ color: rgb(100, 106, 170);
/* oklch */ color: oklch(54.7% 0.100 278.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#646aaa",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 170
  },
  "hsl": {
    "h": 234.857,
    "s": 29.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.54736,
    "c": 0.09955,
    "h": 278.5
  },
  "luminance": 0.1592
}

Semantic roles & 50–950 ramp

primary

#646AAA

secondary

#C4C1A6

accent

#BD62C5

background

#F9F9FC

surface

#F2F1F8

border

#CCCBD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646AAA

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

Preview Lab → · Contrast checker → · Palette generator →