#646ECC#646ECC

#646ECC is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.5% C 0.143 H 276.3°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646ECC
RGB	rgb(100, 110, 204)
HSL	hsl(234, 50%, 60%)
HSV	hsv(234, 51%, 80%)
CMYK	cmyk(51%, 46.1%, 0%, 20%)
CIE-LAB	lab(49.76, 22.27, -50.12)
CIE-LCH	lch(49.76, 54.84, 293.95°)
OKLab	oklab(57.54% 0.0158 -0.1425)
OKLCH	oklch(57.54% 0.143 276.3)
XYZ	xyz(21.7271, 18.2195, 59.4869)
Luminance	0.1822 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ECC #CCC264

analogous

#64A2CC #646ECC #8E64CC

triadic

#646ECC #CC646E #6ECC64

tetradic

#646ECC #CC64A2 #CCC264 #64CC8E

square

#646ECC #CC64A2 #CCC264 #64CC8E

split-complementary

#646ECC #CC8E64 #A2CC64

monochromatic

#2D3689 #3C48B7 #646ECC #9299DB #C0C4EA

Accessibility & contrast

On white

4.52

#646ECC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646ECC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ECC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ECC	#FFFFFF	#000000	##000000
##646ECC	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#457BCF

Deuteranopia (green-blind)

#3B72CA

Tritanopia (blue-blind)

#388293

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646ecc;
/* rgb */ color: rgb(100, 110, 204);
/* oklch */ color: oklch(57.5% 0.143 276.3);

Tailwind

colors: {
  custom: {
    50: '#9797dc',
    500: '#646ecc',
    950: '#000000',
  },
}

SCSS

$custom: #646ecc;
$custom-light: #9797dc;
$custom-dark: #000000;

JSON

{
  "hex": "#646ecc",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 204
  },
  "hsl": {
    "h": 234.231,
    "s": 50.485,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57541,
    "c": 0.14338,
    "h": 276.3
  },
  "luminance": 0.18221
}

Semantic roles & 50–950 ramp

primary

#646ECC

secondary

#DAD6B2

accent

#CD4EDA

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646ECC

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

Preview Lab → · Contrast checker → · Palette generator →