#646BF0#646BF0

#646BF0 is a mid, vivid blue. Relative luminance 0.195; OKLCH L 59.4% C 0.196 H 276.4°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#646BF0
RGB	rgb(100, 107, 240)
HSL	hsl(237, 82%, 67%)
HSV	hsv(237, 58%, 94%)
CMYK	cmyk(58.3%, 55.4%, 0%, 5.9%)
CIE-LAB	lab(51.28, 35.54, -68.01)
CIE-LCH	lch(51.28, 76.74, 297.59°)
OKLab	oklab(59.41% 0.0217 -0.1951)
OKLCH	oklch(59.41% 0.196 276.4)
XYZ	xyz(26.2363, 19.5140, 84.8052)
Luminance	0.1952 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BF0 #F0E964

analogous

#64B1F0 #646BF0 #A364F0

triadic

#646BF0 #F0646B #6BF064

tetradic

#646BF0 #F064B1 #F0E964 #64F0A3

square

#646BF0 #F064B1 #F0E964 #64F0A3

split-complementary

#646BF0 #F0A364 #B1F064

monochromatic

#131CC6 #2C36EB #646BF0 #9CA0F5 #D4D6FB

Accessibility & contrast

On white

4.28

#646BF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#646BF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BF0

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BF0	#FFFFFF	#000000	##000000
##646BF0	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F5

Deuteranopia (green-blind)

#0074ED

Tritanopia (blue-blind)

#008AA3

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646bf0;
/* rgb */ color: rgb(100, 107, 240);
/* oklch */ color: oklch(59.4% 0.196 276.4);

Tailwind

colors: {
  custom: {
    50: '#9c95f6',
    500: '#646bf0',
    950: '#000000',
  },
}

SCSS

$custom: #646bf0;
$custom-light: #9c95f6;
$custom-dark: #000000;

JSON

{
  "hex": "#646bf0",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 240
  },
  "hsl": {
    "h": 237,
    "s": 82.353,
    "l": 66.667
  },
  "oklch": {
    "l": 0.59413,
    "c": 0.19634,
    "h": 276.4
  },
  "luminance": 0.19516
}

Semantic roles & 50–950 ramp

primary

#646BF0

secondary

#EEECC1

accent

#D407DF

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646BF0

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

Preview Lab → · Contrast checker → · Palette generator →