#646AD5#646AD5

#646AD5 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.3% C 0.161 H 277.6°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646AD5
RGB	rgb(100, 106, 213)
HSL	hsl(237, 57%, 61%)
HSV	hsv(237, 53%, 84%)
CMYK	cmyk(53.1%, 50.2%, 0%, 16.5%)
CIE-LAB	lab(49.28, 27.55, -56.02)
CIE-LCH	lch(49.28, 62.43, 296.19°)
OKLab	oklab(57.35% 0.0213 -0.1599)
OKLCH	oklch(57.35% 0.161 277.6)
XYZ	xyz(22.4160, 17.8201, 65.1963)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AD5 #D5CF64

analogous

#64A3D5 #646AD5 #9764D5

triadic

#646AD5 #D5646A #6AD564

tetradic

#646AD5 #D564A3 #D5CF64 #64D597

square

#646AD5 #D564A3 #D5CF64 #64D597

split-complementary

#646AD5 #D59764 #A3D564

monochromatic

#292E96 #363DC6 #646AD5 #9498E2 #C4C7EF

Accessibility & contrast

On white

4.60

#646AD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#646AD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646AD5

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AD5	#FFFFFF	#000000	##FFFFFF
##646AD5	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#347AD9

Deuteranopia (green-blind)

#2671D3

Tritanopia (blue-blind)

#308295

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ad5;
/* rgb */ color: rgb(100, 106, 213);
/* oklch */ color: oklch(57.3% 0.161 277.6);

Tailwind

colors: {
  custom: {
    50: '#9894e2',
    500: '#646ad5',
    950: '#000000',
  },
}

SCSS

$custom: #646ad5;
$custom-light: #9894e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646ad5",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 213
  },
  "hsl": {
    "h": 236.814,
    "s": 57.36,
    "l": 61.373
  },
  "oklch": {
    "l": 0.57349,
    "c": 0.16131,
    "h": 277.6
  },
  "luminance": 0.17821
}

Semantic roles & 50–950 ramp

primary

#646AD5

secondary

#E0DDB5

accent

#BC21C5

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646AD5

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

Preview Lab → · Contrast checker → · Palette generator →