#646DC6#646DC6

#646DC6 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.0% C 0.136 H 276.8°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646DC6
RGB	rgb(100, 109, 198)
HSL	hsl(234, 46%, 58%)
HSV	hsv(234, 49%, 78%)
CMYK	cmyk(49.5%, 44.9%, 0%, 22.4%)
CIE-LAB	lab(49.16, 21.01, -47.65)
CIE-LCH	lch(49.16, 52.07, 293.79°)
OKLab	oklab(56.97% 0.0162 -0.1352)
OKLCH	oklch(56.97% 0.136 276.8)
XYZ	xyz(20.9140, 17.7226, 55.7339)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC6 #C6BD64

analogous

#649EC6 #646DC6 #8C64C6

triadic

#646DC6 #C6646D #6DC664

tetradic

#646DC6 #C6649E #C6BD64 #64C68C

square

#646DC6 #C6649E #C6BD64 #64C68C

split-complementary

#646DC6 #C68C64 #9EC664

monochromatic

#2F3780 #404AAD #646DC6 #9197D6 #BDC1E7

Accessibility & contrast

On white

4.62

#646DC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#646DC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC6

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC6	#FFFFFF	#000000	##FFFFFF
##646DC6	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4879C9

Deuteranopia (green-blind)

#3F71C4

Tritanopia (blue-blind)

#3D8090

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646dc6;
/* rgb */ color: rgb(100, 109, 198);
/* oklch */ color: oklch(57.0% 0.136 276.8);

Tailwind

colors: {
  custom: {
    50: '#9696d8',
    500: '#646dc6',
    950: '#000000',
  },
}

SCSS

$custom: #646dc6;
$custom-light: #9696d8;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc6",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 198
  },
  "hsl": {
    "h": 234.49,
    "s": 46.226,
    "l": 58.431
  },
  "oklch": {
    "l": 0.56972,
    "c": 0.13621,
    "h": 276.8
  },
  "luminance": 0.17724
}

Semantic roles & 50–950 ramp

primary

#646DC6

secondary

#D6D3AF

accent

#CA52D6

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC6

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

Preview Lab → · Contrast checker → · Palette generator →