#646FC3#646FC3

#646FC3 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.2% C 0.129 H 275.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646FC3
RGB	rgb(100, 111, 195)
HSL	hsl(233, 44%, 58%)
HSV	hsv(233, 49%, 76%)
CMYK	cmyk(48.7%, 43.1%, 0%, 23.5%)
CIE-LAB	lab(49.52, 18.85, -45.35)
CIE-LCH	lch(49.52, 49.11, 292.57°)
OKLab	oklab(57.19% 0.0133 -0.1285)
OKLCH	oklch(57.19% 0.129 275.9)
XYZ	xyz(20.7872, 18.0171, 54.0015)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC3 #C3B864

analogous

#649EC3 #646FC3 #8964C3

triadic

#646FC3 #C3646F #6FC364

tetradic

#646FC3 #C3649E #C3B864 #64C389

square

#646FC3 #C3649E #C3B864 #64C389

split-complementary

#646FC3 #C38964 #9EC364

monochromatic

#30397C #414DA9 #646FC3 #9098D4 #BCC1E5

Accessibility & contrast

On white

4.56

#646FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#646FC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FC3

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC3	#FFFFFF	#000000	##000000
##646FC3	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7AC6

Deuteranopia (green-blind)

#4572C1

Tritanopia (blue-blind)

#3F818F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646fc3;
/* rgb */ color: rgb(100, 111, 195);
/* oklch */ color: oklch(57.2% 0.129 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698d5',
    500: '#646fc3',
    950: '#000000',
  },
}

SCSS

$custom: #646fc3;
$custom-light: #9698d5;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc3",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 195
  },
  "hsl": {
    "h": 233.053,
    "s": 44.186,
    "l": 57.843
  },
  "oklch": {
    "l": 0.57191,
    "c": 0.1292,
    "h": 275.9
  },
  "luminance": 0.18018
}

Semantic roles & 50–950 ramp

primary

#646FC3

secondary

#D4D0AE

accent

#C554D4

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646FC3

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

Preview Lab → · Contrast checker → · Palette generator →