#646BD5#646BD5

#646BD5 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.5% C 0.160 H 277.3°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646BD5
RGB	rgb(100, 107, 213)
HSL	hsl(236, 57%, 61%)
HSV	hsv(236, 53%, 84%)
CMYK	cmyk(53.1%, 49.8%, 0%, 16.5%)
CIE-LAB	lab(49.53, 26.94, -55.62)
CIE-LCH	lch(49.53, 61.80, 295.84°)
OKLab	oklab(57.54% 0.0203 -0.1587)
OKLCH	oklch(57.54% 0.16 277.3)
XYZ	xyz(22.5197, 18.0274, 65.2309)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD5 #D5CE64

analogous

#64A4D5 #646BD5 #9664D5

triadic

#646BD5 #D5646B #6BD564

tetradic

#646BD5 #D564A4 #D5CE64 #64D596

square

#646BD5 #D564A4 #D5CE64 #64D596

split-complementary

#646BD5 #D59664 #A4D564

monochromatic

#292F96 #363FC6 #646BD5 #9499E2 #C4C7EF

Accessibility & contrast

On white

4.56

#646BD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#646BD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD5

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD5	#FFFFFF	#000000	##000000
##646BD5	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377AD9

Deuteranopia (green-blind)

#2871D3

Tritanopia (blue-blind)

#308296

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd5;
/* rgb */ color: rgb(100, 107, 213);
/* oklch */ color: oklch(57.5% 0.160 277.3);

Tailwind

colors: {
  custom: {
    50: '#9895e2',
    500: '#646bd5',
    950: '#000000',
  },
}

SCSS

$custom: #646bd5;
$custom-light: #9895e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd5",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 213
  },
  "hsl": {
    "h": 236.283,
    "s": 57.36,
    "l": 61.373
  },
  "oklch": {
    "l": 0.57539,
    "c": 0.15998,
    "h": 277.3
  },
  "luminance": 0.18029
}

Semantic roles & 50–950 ramp

primary

#646BD5

secondary

#E0DDB5

accent

#BB21C5

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BD5

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

Preview Lab → · Contrast checker → · Palette generator →