#646AEC#646AEC

#646AEC is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.9% C 0.192 H 276.8°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#646AEC
RGB	rgb(100, 106, 236)
HSL	hsl(237, 78%, 66%)
HSV	hsv(237, 58%, 93%)
CMYK	cmyk(57.6%, 55.1%, 0%, 7.5%)
CIE-LAB	lab(50.77, 34.86, -66.60)
CIE-LCH	lch(50.77, 75.17, 297.63°)
OKLab	oklab(58.95% 0.0226 -0.191)
OKLCH	oklch(58.95% 0.192 276.8)
XYZ	xyz(25.5450, 19.0717, 81.6757)
Luminance	0.1907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AEC #ECE664

analogous

#64AEEC #646AEC #A264EC

triadic

#646AEC #EC646A #6AEC64

tetradic

#646AEC #EC64AE #ECE664 #64ECA2

square

#646AEC #EC64AE #ECE664 #64ECA2

split-complementary

#646AEC #ECA264 #AEEC64

monochromatic

#171FBE #2D36E5 #646AEC #9B9EF3 #D1D3F9

Accessibility & contrast

On white

4.36

#646AEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#646AEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646AEC

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AEC	#FFFFFF	#000000	##000000
##646AEC	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007FF0

Deuteranopia (green-blind)

#0073E9

Tritanopia (blue-blind)

#0088A1

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646aec;
/* rgb */ color: rgb(100, 106, 236);
/* oklch */ color: oklch(58.9% 0.192 276.8);

Tailwind

colors: {
  custom: {
    50: '#9b94f3',
    500: '#646aec',
    950: '#000000',
  },
}

SCSS

$custom: #646aec;
$custom-light: #9b94f3;
$custom-dark: #000000;

JSON

{
  "hex": "#646aec",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 236
  },
  "hsl": {
    "h": 237.353,
    "s": 78.161,
    "l": 65.882
  },
  "oklch": {
    "l": 0.58945,
    "c": 0.19232,
    "h": 276.8
  },
  "luminance": 0.19074
}

Semantic roles & 50–950 ramp

primary

#646AEC

secondary

#ECEABF

accent

#D10BDA

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #646AEC

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

Preview Lab → · Contrast checker → · Palette generator →