#646EC3#646EC3

#646EC3 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.0% C 0.131 H 276.4°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646EC3
RGB	rgb(100, 110, 195)
HSL	hsl(234, 44%, 58%)
HSV	hsv(234, 49%, 76%)
CMYK	cmyk(48.7%, 43.6%, 0%, 23.5%)
CIE-LAB	lab(49.25, 19.46, -45.77)
CIE-LCH	lch(49.25, 49.74, 293.03°)
OKLab	oklab(56.99% 0.0145 -0.1298)
OKLCH	oklch(56.99% 0.131 276.4)
XYZ	xyz(20.6787, 17.8001, 53.9653)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EC3 #C3B964

analogous

#649EC3 #646EC3 #8964C3

triadic

#646EC3 #C3646E #6EC364

tetradic

#646EC3 #C3649E #C3B964 #64C389

square

#646EC3 #C3649E #C3B964 #64C389

split-complementary

#646EC3 #C38964 #9EC364

monochromatic

#30387C #414CA9 #646EC3 #9097D4 #BCC1E5

Accessibility & contrast

On white

4.61

#646EC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#646EC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646EC3

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EC3	#FFFFFF	#000000	##FFFFFF
##646EC3	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C79C6

Deuteranopia (green-blind)

#4371C1

Tritanopia (blue-blind)

#3F808F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ec3;
/* rgb */ color: rgb(100, 110, 195);
/* oklch */ color: oklch(57.0% 0.131 276.4);

Tailwind

colors: {
  custom: {
    50: '#9697d5',
    500: '#646ec3',
    950: '#000000',
  },
}

SCSS

$custom: #646ec3;
$custom-light: #9697d5;
$custom-dark: #000000;

JSON

{
  "hex": "#646ec3",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 195
  },
  "hsl": {
    "h": 233.684,
    "s": 44.186,
    "l": 57.843
  },
  "oklch": {
    "l": 0.5699,
    "c": 0.13057,
    "h": 276.4
  },
  "luminance": 0.17801
}

Semantic roles & 50–950 ramp

primary

#646EC3

secondary

#D4D0AE

accent

#C654D4

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646EC3

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

Preview Lab → · Contrast checker → · Palette generator →