#646CBE#646CBE

#646CBE is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.3% C 0.126 H 277.3°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#646CBE
RGB	rgb(100, 108, 190)
HSL	hsl(235, 41%, 57%)
HSV	hsv(235, 47%, 75%)
CMYK	cmyk(47.4%, 43.2%, 0%, 25.5%)
CIE-LAB	lab(48.45, 19.14, -44.17)
CIE-LCH	lch(48.45, 48.14, 293.43°)
OKLab	oklab(56.29% 0.0161 -0.1251)
OKLCH	oklch(56.29% 0.126 277.3)
XYZ	xyz(19.9095, 17.1511, 50.9666)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CBE #BEB664

analogous

#6499BE #646CBE #8964BE

triadic

#646CBE #BE646C #6CBE64

tetradic

#646CBE #BE6499 #BEB664 #64BE89

square

#646CBE #BE6499 #BEB664 #64BE89

split-complementary

#646CBE #BE8964 #99BE64

monochromatic

#323876 #444CA1 #646CBE #8F95D0 #BABEE2

Accessibility & contrast

On white

4.74

#646CBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#646CBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CBE

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CBE	#FFFFFF	#000000	##FFFFFF
##646CBE	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C77C1

Deuteranopia (green-blind)

#4470BC

Tritanopia (blue-blind)

#437D8C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646cbe;
/* rgb */ color: rgb(100, 108, 190);
/* oklch */ color: oklch(56.3% 0.126 277.3);

Tailwind

colors: {
  custom: {
    50: '#9596d2',
    500: '#646cbe',
    950: '#000000',
  },
}

SCSS

$custom: #646cbe;
$custom-light: #9596d2;
$custom-dark: #000000;

JSON

{
  "hex": "#646cbe",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 190
  },
  "hsl": {
    "h": 234.667,
    "s": 40.909,
    "l": 56.863
  },
  "oklch": {
    "l": 0.56288,
    "c": 0.1261,
    "h": 277.3
  },
  "luminance": 0.17152
}

Semantic roles & 50–950 ramp

primary

#646CBE

secondary

#D1CEAD

accent

#C657D1

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646CBE

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

Preview Lab → · Contrast checker → · Palette generator →