#646FF3#646FF3

#646FF3 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 60.3% C 0.195 H 275.3°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#646FF3
RGB	rgb(100, 111, 243)
HSL	hsl(235, 86%, 67%)
HSV	hsv(235, 59%, 95%)
CMYK	cmyk(58.8%, 54.3%, 0%, 4.7%)
CIE-LAB	lab(52.45, 34.09, -67.79)
CIE-LCH	lch(52.45, 75.88, 296.70°)
OKLab	oklab(60.35% 0.0181 -0.1945)
OKLCH	oklch(60.35% 0.195 275.3)
XYZ	xyz(27.1124, 20.5472, 87.3139)
Luminance	0.2055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FF3 #F3E864

analogous

#64B6F3 #646FF3 #A164F3

triadic

#646FF3 #F3646F #6FF364

tetradic

#646FF3 #F364B6 #F3E864 #64F3A1

square

#646FF3 #F364B6 #F3E864 #64F3A1

split-complementary

#646FF3 #F3A164 #B6F364

monochromatic

#101ECD #2B3AEF #646FF3 #9DA4F7 #D6D9FC

Accessibility & contrast

On white

4.11

#646FF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#646FF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FF3

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FF3	#FFFFFF	#000000	##000000
##646FF3	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A83F8

Deuteranopia (green-blind)

#0077F0

Tritanopia (blue-blind)

#008EA6

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #646ff3;
/* rgb */ color: rgb(100, 111, 243);
/* oklch */ color: oklch(60.3% 0.195 275.3);

Tailwind

colors: {
  custom: {
    50: '#9c98f8',
    500: '#646ff3',
    950: '#000000',
  },
}

SCSS

$custom: #646ff3;
$custom-light: #9c98f8;
$custom-dark: #000000;

JSON

{
  "hex": "#646ff3",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 243
  },
  "hsl": {
    "h": 235.385,
    "s": 85.629,
    "l": 67.255
  },
  "oklch": {
    "l": 0.60348,
    "c": 0.1953,
    "h": 275.3
  },
  "luminance": 0.20549
}

Semantic roles & 50–950 ramp

primary

#646FF3

secondary

#F0ECC3

accent

#D103E2

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646FF3

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

Preview Lab → · Contrast checker → · Palette generator →