#646FC0#646FC0

#646FC0 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.0% C 0.125 H 275.9°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#646FC0
RGB	rgb(100, 111, 192)
HSL	hsl(233, 42%, 57%)
HSV	hsv(233, 48%, 75%)
CMYK	cmyk(47.9%, 42.2%, 0%, 24.7%)
CIE-LAB	lab(49.35, 17.92, -43.89)
CIE-LCH	lch(49.35, 47.40, 292.21°)
OKLab	oklab(57.01% 0.0127 -0.1242)
OKLCH	oklch(57.01% 0.125 275.9)
XYZ	xyz(20.4514, 17.8828, 52.2330)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC0 #C0B564

analogous

#649DC0 #646FC0 #8764C0

triadic

#646FC0 #C0646F #6FC064

tetradic

#646FC0 #C0649D #C0B564 #64C087

square

#646FC0 #C0649D #C0B564 #64C087

split-complementary

#646FC0 #C08764 #9DC064

monochromatic

#313A79 #434EA4 #646FC0 #9097D2 #BBC0E3

Accessibility & contrast

On white

4.59

#646FC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#646FC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FC0

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC0	#FFFFFF	#000000	##FFFFFF
##646FC0	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F79C3

Deuteranopia (green-blind)

#4772BE

Tritanopia (blue-blind)

#41808E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646fc0;
/* rgb */ color: rgb(100, 111, 192);
/* oklch */ color: oklch(57.0% 0.125 275.9);

Tailwind

colors: {
  custom: {
    50: '#9598d3',
    500: '#646fc0',
    950: '#000000',
  },
}

SCSS

$custom: #646fc0;
$custom-light: #9598d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc0",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 192
  },
  "hsl": {
    "h": 232.826,
    "s": 42.202,
    "l": 57.255
  },
  "oklch": {
    "l": 0.57013,
    "c": 0.12488,
    "h": 275.9
  },
  "luminance": 0.17884
}

Semantic roles & 50–950 ramp

primary

#646FC0

secondary

#D3CEAD

accent

#C356D2

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646FC0

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

Preview Lab → · Contrast checker → · Palette generator →