#646CD1#646CD1

#646CD1 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.5% C 0.153 H 277.0°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646CD1
RGB	rgb(100, 108, 209)
HSL	hsl(236, 54%, 61%)
HSV	hsv(236, 52%, 82%)
CMYK	cmyk(52.2%, 48.3%, 0%, 18%)
CIE-LAB	lab(49.54, 25.07, -53.33)
CIE-LCH	lch(49.54, 58.92, 295.18°)
OKLab	oklab(57.47% 0.0187 -0.1519)
OKLCH	oklch(57.47% 0.153 277)
XYZ	xyz(22.1231, 18.0365, 62.6249)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CD1 #D1C964

analogous

#64A3D1 #646CD1 #9264D1

triadic

#646CD1 #D1646C #6CD164

tetradic

#646CD1 #D164A3 #D1C964 #64D192

square

#646CD1 #D164A3 #D1C964 #64D192

split-complementary

#646CD1 #D19264 #A3D164

monochromatic

#2B3290 #3943BF #646CD1 #9399DF #C2C6ED

Accessibility & contrast

On white

4.56

#646CD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#646CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CD1

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CD1	#FFFFFF	#000000	##000000
##646CD1	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)

#3D7AD5

Deuteranopia (green-blind)

#3172CF

Tritanopia (blue-blind)

#348294

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646cd1;
/* rgb */ color: rgb(100, 108, 209);
/* oklch */ color: oklch(57.5% 0.153 277.0);

Tailwind

colors: {
  custom: {
    50: '#9796e0',
    500: '#646cd1',
    950: '#000000',
  },
}

SCSS

$custom: #646cd1;
$custom-light: #9796e0;
$custom-dark: #000000;

JSON

{
  "hex": "#646cd1",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 209
  },
  "hsl": {
    "h": 235.596,
    "s": 54.229,
    "l": 60.588
  },
  "oklch": {
    "l": 0.57469,
    "c": 0.15308,
    "h": 277
  },
  "luminance": 0.18038
}

Semantic roles & 50–950 ramp

primary

#646CD1

secondary

#DDDAB4

accent

#B624C2

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646CD1

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

Preview Lab → · Contrast checker → · Palette generator →