#646EC4#646EC4

#646EC4 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.0% C 0.132 H 276.4°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646EC4
RGB	rgb(100, 110, 196)
HSL	hsl(234, 45%, 58%)
HSV	hsv(234, 49%, 77%)
CMYK	cmyk(49%, 43.9%, 0%, 23.1%)
CIE-LAB	lab(49.31, 19.77, -46.26)
CIE-LCH	lch(49.31, 50.31, 293.14°)
OKLab	oklab(57.05% 0.0146 -0.1312)
OKLCH	oklch(57.05% 0.132 276.4)
XYZ	xyz(20.7922, 17.8455, 54.5628)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EC4 #C4BA64

analogous

#649EC4 #646EC4 #8A64C4

triadic

#646EC4 #C4646E #6EC464

tetradic

#646EC4 #C4649E #C4BA64 #64C48A

square

#646EC4 #C4649E #C4BA64 #64C48A

split-complementary

#646EC4 #C48A64 #9EC464

monochromatic

#30387E #414CAA #646EC4 #9097D5 #BDC1E6

Accessibility & contrast

On white

4.60

#646EC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#646EC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646EC4

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EC4	#FFFFFF	#000000	##FFFFFF
##646EC4	1.00	4.60	4.57	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B79C7

Deuteranopia (green-blind)

#4272C2

Tritanopia (blue-blind)

#3F808F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ec4;
/* rgb */ color: rgb(100, 110, 196);
/* oklch */ color: oklch(57.0% 0.132 276.4);

Tailwind

colors: {
  custom: {
    50: '#9697d6',
    500: '#646ec4',
    950: '#000000',
  },
}

SCSS

$custom: #646ec4;
$custom-light: #9697d6;
$custom-dark: #000000;

JSON

{
  "hex": "#646ec4",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 196
  },
  "hsl": {
    "h": 233.75,
    "s": 44.86,
    "l": 58.039
  },
  "oklch": {
    "l": 0.5705,
    "c": 0.13199,
    "h": 276.4
  },
  "luminance": 0.17847
}

Semantic roles & 50–950 ramp

primary

#646EC4

secondary

#D5D1AF

accent

#C753D5

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646EC4

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

Preview Lab → · Contrast checker → · Palette generator →