#646FF4#646FF4

#646FF4 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 60.4% C 0.197 H 275.3°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#646FF4
RGB	rgb(100, 111, 244)
HSL	hsl(235, 87%, 67%)
HSV	hsv(235, 59%, 96%)
CMYK	cmyk(59%, 54.5%, 0%, 4.3%)
CIE-LAB	lab(52.52, 34.42, -68.24)
CIE-LCH	lch(52.52, 76.43, 296.76°)
OKLab	oklab(60.42% 0.0181 -0.1958)
OKLCH	oklch(60.42% 0.197 275.3)
XYZ	xyz(27.2638, 20.6078, 88.1114)
Luminance	0.2061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FF4 #F4E964

analogous

#64B7F4 #646FF4 #A164F4

triadic

#646FF4 #F4646F #6FF464

tetradic

#646FF4 #F464B7 #F4E964 #64F4A1

square

#646FF4 #F464B7 #F4E964 #64F4A1

split-complementary

#646FF4 #F4A164 #B7F464

monochromatic

#0F1DCF #2B3AF0 #646FF4 #9DA4F8 #D6D9FC

Accessibility & contrast

On white

4.10

#646FF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#646FF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FF4

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FF4	#FFFFFF	#000000	##000000
##646FF4	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0584F9

Deuteranopia (green-blind)

#0077F1

Tritanopia (blue-blind)

#008EA7

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #646ff4;
/* rgb */ color: rgb(100, 111, 244);
/* oklch */ color: oklch(60.4% 0.197 275.3);

Tailwind

colors: {
  custom: {
    50: '#9c98f9',
    500: '#646ff4',
    950: '#000000',
  },
}

SCSS

$custom: #646ff4;
$custom-light: #9c98f9;
$custom-dark: #000000;

JSON

{
  "hex": "#646ff4",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 244
  },
  "hsl": {
    "h": 235.417,
    "s": 86.747,
    "l": 67.451
  },
  "oklch": {
    "l": 0.60419,
    "c": 0.19661,
    "h": 275.3
  },
  "luminance": 0.2061
}

Semantic roles & 50–950 ramp

primary

#646FF4

secondary

#F0EDC3

accent

#D202E3

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646FF4

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

Preview Lab → · Contrast checker → · Palette generator →