#646FA8#646FA8

#646FA8 is a mid, moderate blue. Relative luminance 0.169; OKLCH L 55.7% C 0.090 H 274.8°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#646FA8
RGB	rgb(100, 111, 168)
HSL	hsl(230, 28%, 53%)
HSV	hsv(230, 40%, 66%)
CMYK	cmyk(40.5%, 33.9%, 0%, 34.1%)
CIE-LAB	lab(48.14, 10.70, -31.88)
CIE-LCH	lch(48.14, 33.62, 288.55°)
OKLab	oklab(55.68% 0.0075 -0.0893)
OKLCH	oklch(55.68% 0.09 274.8)
XYZ	xyz(18.0057, 16.9045, 39.3524)
Luminance	0.1691 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA8 #A89D64

analogous

#6491A8 #646FA8 #7B64A8

triadic

#646FA8 #A8646F #6FA864

tetradic

#646FA8 #A86491 #A89D64 #64A87B

square

#646FA8 #A86491 #A89D64 #64A87B

split-complementary

#646FA8 #A87B64 #91A864

monochromatic

#343B5D #4A5484 #646FA8 #8B93BE #B2B8D4

Accessibility & contrast

On white

4.79

#646FA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#646FA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA8

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA8	#FFFFFF	#000000	##FFFFFF
##646FA8	1.00	4.79	4.38	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C75AA

Deuteranopia (green-blind)

#5770A7

Tritanopia (blue-blind)

#4F7A84

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646fa8;
/* rgb */ color: rgb(100, 111, 168);
/* oklch */ color: oklch(55.7% 0.090 274.8);

Tailwind

colors: {
  custom: {
    50: '#9398c2',
    500: '#646fa8',
    950: '#000000',
  },
}

SCSS

$custom: #646fa8;
$custom-light: #9398c2;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa8",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 168
  },
  "hsl": {
    "h": 230.294,
    "s": 28.099,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55683,
    "c": 0.08957,
    "h": 274.8
  },
  "luminance": 0.16905
}

Semantic roles & 50–950 ramp

primary

#646FA8

secondary

#C3BEA5

accent

#B563C4

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA8

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

Preview Lab → · Contrast checker → · Palette generator →