#646CF0#646CF0

#646CF0 is a mid, vivid blue. Relative luminance 0.197; OKLCH L 59.6% C 0.195 H 276.1°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#646CF0
RGB	rgb(100, 108, 240)
HSL	hsl(237, 82%, 67%)
HSV	hsv(237, 58%, 94%)
CMYK	cmyk(58.3%, 55%, 0%, 5.9%)
CIE-LAB	lab(51.52, 34.94, -67.62)
CIE-LCH	lch(51.52, 76.11, 297.33°)
OKLab	oklab(59.59% 0.0208 -0.194)
OKLCH	oklch(59.59% 0.195 276.1)
XYZ	xyz(26.3412, 19.7238, 84.8402)
Luminance	0.1973 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CF0 #F0E864

analogous

#64B2F0 #646CF0 #A264F0

triadic

#646CF0 #F0646C #6CF064

tetradic

#646CF0 #F064B2 #F0E864 #64F0A2

square

#646CF0 #F064B2 #F0E864 #64F0A2

split-complementary

#646CF0 #F0A264 #B2F064

monochromatic

#131DC6 #2C37EB #646CF0 #9CA1F5 #D4D6FB

Accessibility & contrast

On white

4.25

#646CF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#646CF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CF0

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CF0	#FFFFFF	#000000	##000000
##646CF0	1.00	4.25	4.95	4.95
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081F5

Deuteranopia (green-blind)

#0075ED

Tritanopia (blue-blind)

#008BA4

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #646cf0;
/* rgb */ color: rgb(100, 108, 240);
/* oklch */ color: oklch(59.6% 0.195 276.1);

Tailwind

colors: {
  custom: {
    50: '#9c96f6',
    500: '#646cf0',
    950: '#000000',
  },
}

SCSS

$custom: #646cf0;
$custom-light: #9c96f6;
$custom-dark: #000000;

JSON

{
  "hex": "#646cf0",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 240
  },
  "hsl": {
    "h": 236.571,
    "s": 82.353,
    "l": 66.667
  },
  "oklch": {
    "l": 0.59592,
    "c": 0.19509,
    "h": 276.1
  },
  "luminance": 0.19726
}

Semantic roles & 50–950 ramp

primary

#646CF0

secondary

#EEECC1

accent

#D207DF

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CF0

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

Preview Lab → · Contrast checker → · Palette generator →