#646FC8#646FC8

#646FC8 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.5% C 0.136 H 275.9°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#646FC8
RGB	rgb(100, 111, 200)
HSL	hsl(233, 48%, 59%)
HSV	hsv(233, 50%, 78%)
CMYK	cmyk(50%, 44.5%, 0%, 21.6%)
CIE-LAB	lab(49.79, 20.40, -47.78)
CIE-LCH	lch(49.79, 51.95, 293.12°)
OKLab	oklab(57.49% 0.0141 -0.1356)
OKLCH	oklch(57.49% 0.136 275.9)
XYZ	xyz(21.3620, 18.2471, 57.0288)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC8 #C8BD64

analogous

#64A1C8 #646FC8 #8B64C8

triadic

#646FC8 #C8646F #6FC864

tetradic

#646FC8 #C864A1 #C8BD64 #64C88B

square

#646FC8 #C864A1 #C8BD64 #64C88B

split-complementary

#646FC8 #C88B64 #A1C864

monochromatic

#2F3883 #3F4BB0 #646FC8 #9199D8 #BEC3E8

Accessibility & contrast

On white

4.52

#646FC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#646FC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FC8

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC8	#FFFFFF	#000000	##000000
##646FC8	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7BCB

Deuteranopia (green-blind)

#4073C6

Tritanopia (blue-blind)

#3C8292

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646fc8;
/* rgb */ color: rgb(100, 111, 200);
/* oklch */ color: oklch(57.5% 0.136 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698d9',
    500: '#646fc8',
    950: '#000000',
  },
}

SCSS

$custom: #646fc8;
$custom-light: #9698d9;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc8",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 200
  },
  "hsl": {
    "h": 233.4,
    "s": 47.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.57493,
    "c": 0.13636,
    "h": 275.9
  },
  "luminance": 0.18248
}

Semantic roles & 50–950 ramp

primary

#646FC8

secondary

#D8D3B0

accent

#C851D7

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FC8

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

Preview Lab → · Contrast checker → · Palette generator →