#646CC5#646CC5

#646CC5 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.7% C 0.136 H 277.3°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#646CC5
RGB	rgb(100, 108, 197)
HSL	hsl(235, 46%, 58%)
HSV	hsv(235, 49%, 77%)
CMYK	cmyk(49.2%, 45.2%, 0%, 22.7%)
CIE-LAB	lab(48.84, 21.31, -47.58)
CIE-LCH	lch(48.84, 52.13, 294.13°)
OKLab	oklab(56.71% 0.0172 -0.1351)
OKLCH	oklch(56.71% 0.136 277.3)
XYZ	xyz(20.6930, 17.4645, 55.0931)
Luminance	0.1747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CC5 #C5BD64

analogous

#649CC5 #646CC5 #8C64C5

triadic

#646CC5 #C5646C #6CC564

tetradic

#646CC5 #C5649C #C5BD64 #64C58C

square

#646CC5 #C5649C #C5BD64 #64C58C

split-complementary

#646CC5 #C58C64 #9CC564

monochromatic

#30367F #4049AC #646CC5 #9196D6 #BDC0E6

Accessibility & contrast

On white

4.67

#646CC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#646CC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CC5

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CC5	#FFFFFF	#000000	##FFFFFF
##646CC5	1.00	4.67	4.49	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4778C8

Deuteranopia (green-blind)

#3E70C3

Tritanopia (blue-blind)

#3E7F8F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646cc5;
/* rgb */ color: rgb(100, 108, 197);
/* oklch */ color: oklch(56.7% 0.136 277.3);

Tailwind

colors: {
  custom: {
    50: '#9696d7',
    500: '#646cc5',
    950: '#000000',
  },
}

SCSS

$custom: #646cc5;
$custom-light: #9696d7;
$custom-dark: #000000;

JSON

{
  "hex": "#646cc5",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 197
  },
  "hsl": {
    "h": 235.052,
    "s": 45.54,
    "l": 58.235
  },
  "oklch": {
    "l": 0.56712,
    "c": 0.13615,
    "h": 277.3
  },
  "luminance": 0.17466
}

Semantic roles & 50–950 ramp

primary

#646CC5

secondary

#D6D3AF

accent

#CA53D5

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646CC5

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

Preview Lab → · Contrast checker → · Palette generator →