#646DCC#646DCC

#646DCC is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.3% C 0.145 H 276.7°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646DCC
RGB	rgb(100, 109, 204)
HSL	hsl(235, 50%, 60%)
HSV	hsv(235, 51%, 80%)
CMYK	cmyk(51%, 46.6%, 0%, 20%)
CIE-LAB	lab(49.50, 22.88, -50.53)
CIE-LCH	lch(49.50, 55.47, 294.36°)
OKLab	oklab(57.35% 0.017 -0.1437)
OKLCH	oklch(57.35% 0.145 276.7)
XYZ	xyz(21.6198, 18.0049, 59.4511)
Luminance	0.1801 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DCC #CCC364

analogous

#64A1CC #646DCC #8F64CC

triadic

#646DCC #CC646D #6DCC64

tetradic

#646DCC #CC64A1 #CCC364 #64CC8F

square

#646DCC #CC64A1 #CCC364 #64CC8F

split-complementary

#646DCC #CC8F64 #A1CC64

monochromatic

#2D3589 #3C47B7 #646DCC #9298DB #C0C4EA

Accessibility & contrast

On white

4.56

#646DCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#646DCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DCC

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DCC	#FFFFFF	#000000	##000000
##646DCC	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#437AD0

Deuteranopia (green-blind)

#3972CA

Tritanopia (blue-blind)

#398293

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646dcc;
/* rgb */ color: rgb(100, 109, 204);
/* oklch */ color: oklch(57.3% 0.145 276.7);

Tailwind

colors: {
  custom: {
    50: '#9796dc',
    500: '#646dcc',
    950: '#000000',
  },
}

SCSS

$custom: #646dcc;
$custom-light: #9796dc;
$custom-dark: #000000;

JSON

{
  "hex": "#646dcc",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 204
  },
  "hsl": {
    "h": 234.808,
    "s": 50.485,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57345,
    "c": 0.14472,
    "h": 276.7
  },
  "luminance": 0.18006
}

Semantic roles & 50–950 ramp

primary

#646DCC

secondary

#DAD7B2

accent

#CE4EDA

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646DCC

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

Preview Lab → · Contrast checker → · Palette generator →