#646BBE#646BBE

#646BBE is a mid, vivid blue. Relative luminance 0.169; OKLCH L 56.1% C 0.127 H 277.8°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#646BBE
RGB	rgb(100, 107, 190)
HSL	hsl(235, 41%, 57%)
HSV	hsv(235, 47%, 75%)
CMYK	cmyk(47.4%, 43.7%, 0%, 25.5%)
CIE-LAB	lab(48.19, 19.76, -44.59)
CIE-LCH	lch(48.19, 48.77, 293.90°)
OKLab	oklab(56.09% 0.0173 -0.1263)
OKLCH	oklch(56.09% 0.127 277.8)
XYZ	xyz(19.8046, 16.9414, 50.9317)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BBE #BEB764

analogous

#6498BE #646BBE #8A64BE

triadic

#646BBE #BE646B #6BBE64

tetradic

#646BBE #BE6498 #BEB764 #64BE8A

square

#646BBE #BE6498 #BEB764 #64BE8A

split-complementary

#646BBE #BE8A64 #98BE64

monochromatic

#323776 #444BA1 #646BBE #8F94D0 #BABDE2

Accessibility & contrast

On white

4.79

#646BBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#646BBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646BBE

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BBE	#FFFFFF	#000000	##FFFFFF
##646BBE	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A76C1

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#437C8B

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646bbe;
/* rgb */ color: rgb(100, 107, 190);
/* oklch */ color: oklch(56.1% 0.127 277.8);

Tailwind

colors: {
  custom: {
    50: '#9595d2',
    500: '#646bbe',
    950: '#000000',
  },
}

SCSS

$custom: #646bbe;
$custom-light: #9595d2;
$custom-dark: #000000;

JSON

{
  "hex": "#646bbe",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 190
  },
  "hsl": {
    "h": 235.333,
    "s": 40.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56087,
    "c": 0.12749,
    "h": 277.8
  },
  "luminance": 0.16942
}

Semantic roles & 50–950 ramp

primary

#646BBE

secondary

#D1CEAD

accent

#C757D1

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646BBE

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

Preview Lab → · Contrast checker → · Palette generator →