#646BF1#646BF1

#646BF1 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 59.5% C 0.198 H 276.3°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#646BF1
RGB	rgb(100, 107, 241)
HSL	hsl(237, 83%, 67%)
HSV	hsv(237, 59%, 95%)
CMYK	cmyk(58.5%, 55.6%, 0%, 5.5%)
CIE-LAB	lab(51.35, 35.86, -68.46)
CIE-LCH	lch(51.35, 77.28, 297.65°)
OKLab	oklab(59.49% 0.0218 -0.1965)
OKLCH	oklch(59.49% 0.198 276.3)
XYZ	xyz(26.3853, 19.5736, 85.5897)
Luminance	0.1958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BF1 #F1EA64

analogous

#64B2F1 #646BF1 #A464F1

triadic

#646BF1 #F1646B #6BF164

tetradic

#646BF1 #F164B2 #F1EA64 #64F1A4

square

#646BF1 #F164B2 #F1EA64 #64F1A4

split-complementary

#646BF1 #F1A464 #B2F164

monochromatic

#121BC8 #2C35EC #646BF1 #9CA1F6 #D4D6FB

Accessibility & contrast

On white

4.27

#646BF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#646BF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BF1

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BF1	#FFFFFF	#000000	##000000
##646BF1	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F6

Deuteranopia (green-blind)

#0075EE

Tritanopia (blue-blind)

#008BA4

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646bf1;
/* rgb */ color: rgb(100, 107, 241);
/* oklch */ color: oklch(59.5% 0.198 276.3);

Tailwind

colors: {
  custom: {
    50: '#9c95f6',
    500: '#646bf1',
    950: '#000000',
  },
}

SCSS

$custom: #646bf1;
$custom-light: #9c95f6;
$custom-dark: #000000;

JSON

{
  "hex": "#646bf1",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 241
  },
  "hsl": {
    "h": 237.021,
    "s": 83.432,
    "l": 66.863
  },
  "oklch": {
    "l": 0.59485,
    "c": 0.19765,
    "h": 276.3
  },
  "luminance": 0.19576
}

Semantic roles & 50–950 ramp

primary

#646BF1

secondary

#EFEDC2

accent

#D506E0

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646BF1

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

Preview Lab → · Contrast checker → · Palette generator →