#646BD3#646BD3

#646BD3 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.4% C 0.157 H 277.3°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#646BD3
RGB	rgb(100, 107, 211)
HSL	hsl(236, 56%, 61%)
HSV	hsv(236, 53%, 83%)
CMYK	cmyk(52.6%, 49.3%, 0%, 17.3%)
CIE-LAB	lab(49.41, 26.31, -54.68)
CIE-LCH	lch(49.41, 60.68, 295.69°)
OKLab	oklab(57.41% 0.02 -0.1559)
OKLCH	oklch(57.41% 0.157 277.3)
XYZ	xyz(22.2674, 17.9265, 63.9022)
Luminance	0.1793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD3 #D3CC64

analogous

#64A2D3 #646BD3 #9464D3

triadic

#646BD3 #D3646B #6BD364

tetradic

#646BD3 #D364A2 #D3CC64 #64D394

square

#646BD3 #D364A2 #D3CC64 #64D394

split-complementary

#646BD3 #D39464 #A2D364

monochromatic

#2A3093 #3740C3 #646BD3 #9499E1 #C3C6EE

Accessibility & contrast

On white

4.58

#646BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#646BD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD3

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD3	#FFFFFF	#000000	##000000
##646BD3	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397AD7

Deuteranopia (green-blind)

#2C71D1

Tritanopia (blue-blind)

#328295

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646bd3;
/* rgb */ color: rgb(100, 107, 211);
/* oklch */ color: oklch(57.4% 0.157 277.3);

Tailwind

colors: {
  custom: {
    50: '#9895e1',
    500: '#646bd3',
    950: '#000000',
  },
}

SCSS

$custom: #646bd3;
$custom-light: #9895e1;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd3",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 211
  },
  "hsl": {
    "h": 236.216,
    "s": 55.779,
    "l": 60.98
  },
  "oklch": {
    "l": 0.57407,
    "c": 0.1572,
    "h": 277.3
  },
  "luminance": 0.17928
}

Semantic roles & 50–950 ramp

primary

#646BD3

secondary

#DEDCB4

accent

#B922C3

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BD3

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

Preview Lab → · Contrast checker → · Palette generator →