#646AEE#646AEE

#646AEE is a mid, vivid blue. Relative luminance 0.192; OKLCH L 59.1% C 0.195 H 276.7°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#646AEE
RGB	rgb(100, 106, 238)
HSL	hsl(237, 80%, 66%)
HSV	hsv(237, 58%, 93%)
CMYK	cmyk(58%, 55.5%, 0%, 6.7%)
CIE-LAB	lab(50.91, 35.50, -67.50)
CIE-LCH	lch(50.91, 76.27, 297.74°)
OKLab	oklab(59.09% 0.0227 -0.1936)
OKLCH	oklch(59.09% 0.195 276.7)
XYZ	xyz(25.8372, 19.1885, 83.2146)
Luminance	0.1919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AEE #EEE864

analogous

#64AFEE #646AEE #A364EE

triadic

#646AEE #EE646A #6AEE64

tetradic

#646AEE #EE64AF #EEE864 #64EEA3

square

#646AEE #EE64AF #EEE864 #64EEA3

split-complementary

#646AEE #EEA364 #AFEE64

monochromatic

#151DC2 #2D35E8 #646AEE #9B9FF4 #D2D4FA

Accessibility & contrast

On white

4.34

#646AEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#646AEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646AEE

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AEE	#FFFFFF	#000000	##000000
##646AEE	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007FF2

Deuteranopia (green-blind)

#0074EB

Tritanopia (blue-blind)

#0089A2

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646aee;
/* rgb */ color: rgb(100, 106, 238);
/* oklch */ color: oklch(59.1% 0.195 276.7);

Tailwind

colors: {
  custom: {
    50: '#9c94f4',
    500: '#646aee',
    950: '#000000',
  },
}

SCSS

$custom: #646aee;
$custom-light: #9c94f4;
$custom-dark: #000000;

JSON

{
  "hex": "#646aee",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 238
  },
  "hsl": {
    "h": 237.391,
    "s": 80.233,
    "l": 66.275
  },
  "oklch": {
    "l": 0.59089,
    "c": 0.19496,
    "h": 276.7
  },
  "luminance": 0.1919
}

Semantic roles & 50–950 ramp

primary

#646AEE

secondary

#EDEBC0

accent

#D309DD

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646AEE

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

Preview Lab → · Contrast checker → · Palette generator →