#646DCD#646DCD

#646DCD is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.4% C 0.146 H 276.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646DCD
RGB	rgb(100, 109, 205)
HSL	hsl(235, 51%, 60%)
HSV	hsv(235, 51%, 80%)
CMYK	cmyk(51.2%, 46.8%, 0%, 19.6%)
CIE-LAB	lab(49.56, 23.19, -51.01)
CIE-LCH	lch(49.56, 56.04, 294.45°)
OKLab	oklab(57.41% 0.0171 -0.1451)
OKLCH	oklch(57.41% 0.146 276.7)
XYZ	xyz(21.7402, 18.0531, 60.0848)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DCD #CDC464

analogous

#64A2CD #646DCD #8F64CD

triadic

#646DCD #CD646D #6DCD64

tetradic

#646DCD #CD64A2 #CDC464 #64CD8F

square

#646DCD #CD64A2 #CDC464 #64CD8F

split-complementary

#646DCD #CD8F64 #A2CD64

monochromatic

#2D358A #3B46B8 #646DCD #9299DC #C1C4EB

Accessibility & contrast

On white

4.55

#646DCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#646DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DCD

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DCD	#FFFFFF	#000000	##000000
##646DCD	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437AD1

Deuteranopia (green-blind)

#3872CB

Tritanopia (blue-blind)

#388293

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646dcd;
/* rgb */ color: rgb(100, 109, 205);
/* oklch */ color: oklch(57.4% 0.146 276.7);

Tailwind

colors: {
  custom: {
    50: '#9796dd',
    500: '#646dcd',
    950: '#000000',
  },
}

SCSS

$custom: #646dcd;
$custom-light: #9796dd;
$custom-dark: #000000;

JSON

{
  "hex": "#646dcd",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 205
  },
  "hsl": {
    "h": 234.857,
    "s": 51.22,
    "l": 59.804
  },
  "oklch": {
    "l": 0.57408,
    "c": 0.14614,
    "h": 276.7
  },
  "luminance": 0.18054
}

Semantic roles & 50–950 ramp

primary

#646DCD

secondary

#DBD7B2

accent

#CF4DDB

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646DCD

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

Preview Lab → · Contrast checker → · Palette generator →