#646DB0#646DB0

#646DB0 is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.7% C 0.104 H 276.6°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#646DB0
RGB	rgb(100, 109, 176)
HSL	hsl(233, 32%, 54%)
HSV	hsv(233, 43%, 69%)
CMYK	cmyk(43.2%, 38.1%, 0%, 31%)
CIE-LAB	lab(47.98, 14.29, -36.79)
CIE-LCH	lch(47.98, 39.47, 291.22°)
OKLab	oklab(55.69% 0.0121 -0.1035)
OKLCH	oklch(55.69% 0.104 276.6)
XYZ	xyz(18.5583, 16.7803, 43.3269)
Luminance	0.1678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DB0 #B0A764

analogous

#6493B0 #646DB0 #8164B0

triadic

#646DB0 #B0646D #6DB064

tetradic

#646DB0 #B06493 #B0A764 #64B081

square

#646DB0 #B06493 #B0A764 #64B081

split-complementary

#646DB0 #B08164 #93B064

monochromatic

#343A66 #49518E #646DB0 #8D93C5 #B5B9D9

Accessibility & contrast

On white

4.82

#646DB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#646DB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DB0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DB0	#FFFFFF	#000000	##FFFFFF
##646DB0	1.00	4.82	4.36	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5575B3

Deuteranopia (green-blind)

#506FAE

Tritanopia (blue-blind)

#4B7B86

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646db0;
/* rgb */ color: rgb(100, 109, 176);
/* oklch */ color: oklch(55.7% 0.104 276.6);

Tailwind

colors: {
  custom: {
    50: '#9496c8',
    500: '#646db0',
    950: '#000000',
  },
}

SCSS

$custom: #646db0;
$custom-light: #9496c8;
$custom-dark: #000000;

JSON

{
  "hex": "#646db0",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 176
  },
  "hsl": {
    "h": 232.895,
    "s": 32.479,
    "l": 54.118
  },
  "oklch": {
    "l": 0.5569,
    "c": 0.10424,
    "h": 276.6
  },
  "luminance": 0.16781
}

Semantic roles & 50–950 ramp

primary

#646DB0

secondary

#C8C4A8

accent

#BC5FC9

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646DB0

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

Preview Lab → · Contrast checker → · Palette generator →