#646FB2#646FB2

#646FB2 is a mid, moderate blue. Relative luminance 0.173; OKLCH L 56.2% C 0.104 H 275.4°. Best body text is #FFFFFF at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#646FB2
RGB	rgb(100, 111, 178)
HSL	hsl(232, 34%, 55%)
HSV	hsv(232, 44%, 70%)
CMYK	cmyk(43.8%, 37.6%, 0%, 30.2%)
CIE-LAB	lab(48.63, 13.66, -36.94)
CIE-LCH	lch(48.63, 39.39, 290.29°)
OKLab	oklab(56.22% 0.0099 -0.104)
OKLCH	oklch(56.22% 0.104 275.4)
XYZ	xyz(18.9734, 17.2916, 44.4487)
Luminance	0.1729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FB2 #B2A764

analogous

#6496B2 #646FB2 #8064B2

triadic

#646FB2 #B2646F #6FB264

tetradic

#646FB2 #B26496 #B2A764 #64B280

square

#646FB2 #B26496 #B2A764 #64B280

split-complementary

#646FB2 #B28064 #96B264

monochromatic

#343B68 #485291 #646FB2 #8D95C6 #B6BBDB

Accessibility & contrast

On white

4.71

#646FB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.46

#646FB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FB2

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FB2	#FFFFFF	#000000	##FFFFFF
##646FB2	1.00	4.71	4.46	4.71
#FFFFFF	4.71	1.00	21.00	1.00
#000000	4.46	21.00	1.00	21.00
##FFFFFF	4.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5777B5

Deuteranopia (green-blind)

#5171B0

Tritanopia (blue-blind)

#4A7D88

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646fb2;
/* rgb */ color: rgb(100, 111, 178);
/* oklch */ color: oklch(56.2% 0.104 275.4);

Tailwind

colors: {
  custom: {
    50: '#9498c9',
    500: '#646fb2',
    950: '#000000',
  },
}

SCSS

$custom: #646fb2;
$custom-light: #9498c9;
$custom-dark: #000000;

JSON

{
  "hex": "#646fb2",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 178
  },
  "hsl": {
    "h": 231.538,
    "s": 33.621,
    "l": 54.51
  },
  "oklch": {
    "l": 0.56217,
    "c": 0.10443,
    "h": 275.4
  },
  "luminance": 0.17293
}

Semantic roles & 50–950 ramp

primary

#646FB2

secondary

#C9C5A8

accent

#BB5ECA

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646FB2

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

Preview Lab → · Contrast checker → · Palette generator →