#646FDD#646FDD

#646FDD is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.8% C 0.166 H 275.8°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#646FDD
RGB	rgb(100, 111, 221)
HSL	hsl(235, 64%, 63%)
HSV	hsv(235, 55%, 87%)
CMYK	cmyk(54.8%, 49.8%, 0%, 13.3%)
CIE-LAB	lab(51.03, 27.04, -57.74)
CIE-LCH	lch(51.03, 63.76, 295.09°)
OKLab	oklab(58.83% 0.0167 -0.1649)
OKLCH	oklch(58.83% 0.166 275.8)
XYZ	xyz(23.9869, 19.2970, 70.8533)
Luminance	0.1930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FDD #DDD264

analogous

#64ACDD #646FDD #9564DD

triadic

#646FDD #DD646F #6FDD64

tetradic

#646FDD #DD64AC #DDD264 #64DD95

square

#646FDD #DD64AC #DDD264 #64DD95

split-complementary

#646FDD #DD9564 #ACDD64

monochromatic

#242FA3 #3240D2 #646FDD #969EE8 #C8CCF3

Accessibility & contrast

On white

4.32

#646FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#646FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FDD

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FDD	#FFFFFF	#000000	##000000
##646FDD	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377FE1

Deuteranopia (green-blind)

#2575DB

Tritanopia (blue-blind)

#25889C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #646fdd;
/* rgb */ color: rgb(100, 111, 221);
/* oklch */ color: oklch(58.8% 0.166 275.8);

Tailwind

colors: {
  custom: {
    50: '#9998e8',
    500: '#646fdd',
    950: '#000000',
  },
}

SCSS

$custom: #646fdd;
$custom-light: #9998e8;
$custom-dark: #000000;

JSON

{
  "hex": "#646fdd",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 221
  },
  "hsl": {
    "h": 234.545,
    "s": 64.021,
    "l": 62.941
  },
  "oklch": {
    "l": 0.58831,
    "c": 0.16572,
    "h": 275.8
  },
  "luminance": 0.19299
}

Semantic roles & 50–950 ramp

primary

#646FDD

secondary

#E4E0B9

accent

#BC1ACC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646FDD

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

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