#646CEE#646CEE

#646CEE is a mid, vivid blue. Relative luminance 0.196; OKLCH L 59.4% C 0.192 H 276.2°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#646CEE
RGB	rgb(100, 108, 238)
HSL	hsl(237, 80%, 66%)
HSV	hsv(237, 58%, 93%)
CMYK	cmyk(58%, 54.6%, 0%, 6.7%)
CIE-LAB	lab(51.39, 34.30, -66.72)
CIE-LCH	lch(51.39, 75.02, 297.21°)
OKLab	oklab(59.45% 0.0207 -0.1913)
OKLCH	oklch(59.45% 0.192 276.2)
XYZ	xyz(26.0457, 19.6056, 83.2841)
Luminance	0.1961 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CEE #EEE664

analogous

#64B1EE #646CEE #A164EE

triadic

#646CEE #EE646C #6CEE64

tetradic

#646CEE #EE64B1 #EEE664 #64EEA1

square

#646CEE #EE64B1 #EEE664 #64EEA1

split-complementary

#646CEE #EEA164 #B1EE64

monochromatic

#151FC2 #2D38E8 #646CEE #9BA0F4 #D2D5FA

Accessibility & contrast

On white

4.27

#646CEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#646CEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CEE

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CEE	#FFFFFF	#000000	##000000
##646CEE	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)

#0780F2

Deuteranopia (green-blind)

#0075EB

Tritanopia (blue-blind)

#008AA3

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646cee;
/* rgb */ color: rgb(100, 108, 238);
/* oklch */ color: oklch(59.4% 0.192 276.2);

Tailwind

colors: {
  custom: {
    50: '#9c96f4',
    500: '#646cee',
    950: '#000000',
  },
}

SCSS

$custom: #646cee;
$custom-light: #9c96f4;
$custom-dark: #000000;

JSON

{
  "hex": "#646cee",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 238
  },
  "hsl": {
    "h": 236.522,
    "s": 80.233,
    "l": 66.275
  },
  "oklch": {
    "l": 0.59448,
    "c": 0.19245,
    "h": 276.2
  },
  "luminance": 0.19607
}

Semantic roles & 50–950 ramp

primary

#646CEE

secondary

#EDEBC0

accent

#D009DD

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646CEE

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

Preview Lab → · Contrast checker → · Palette generator →