#646CDA#646CDA

#646CDA is a mid, vivid blue. Relative luminance 0.185; OKLCH L 58.1% C 0.166 H 276.8°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#646CDA
RGB	rgb(100, 108, 218)
HSL	hsl(236, 61%, 62%)
HSV	hsv(236, 54%, 85%)
CMYK	cmyk(54.1%, 50.5%, 0%, 14.5%)
CIE-LAB	lab(50.09, 27.91, -57.56)
CIE-LCH	lch(50.09, 63.97, 295.87°)
OKLab	oklab(58.06% 0.0196 -0.1644)
OKLCH	oklch(58.06% 0.166 276.8)
XYZ	xyz(23.2690, 18.4949, 68.6598)
Luminance	0.1850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CDA #DAD264

analogous

#64A7DA #646CDA #9764DA

triadic

#646CDA #DA646C #6CDA64

tetradic

#646CDA #DA64A7 #DAD264 #64DA97

square

#646CDA #DA64A7 #DAD264 #64DA97

split-complementary

#646CDA #DA9764 #A7DA64

monochromatic

#262E9E #333DCE #646CDA #959BE6 #C7CAF2

Accessibility & contrast

On white

4.47

#646CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#646CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CDA

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CDA	#FFFFFF	#000000	##000000
##646CDA	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#337CDE

Deuteranopia (green-blind)

#2272D8

Tritanopia (blue-blind)

#2A8599

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646cda;
/* rgb */ color: rgb(100, 108, 218);
/* oklch */ color: oklch(58.1% 0.166 276.8);

Tailwind

colors: {
  custom: {
    50: '#9996e6',
    500: '#646cda',
    950: '#000000',
  },
}

SCSS

$custom: #646cda;
$custom-light: #9996e6;
$custom-dark: #000000;

JSON

{
  "hex": "#646cda",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 218
  },
  "hsl": {
    "h": 235.932,
    "s": 61.458,
    "l": 62.353
  },
  "oklch": {
    "l": 0.58061,
    "c": 0.16553,
    "h": 276.8
  },
  "luminance": 0.18496
}

Semantic roles & 50–950 ramp

primary

#646CDA

secondary

#E2E0B7

accent

#BD1CC9

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646CDA

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

Preview Lab → · Contrast checker → · Palette generator →