#646DBA#646DBA

#646DBA is a mid, moderate blue. Relative luminance 0.172; OKLCH L 56.3% C 0.119 H 276.8°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#646DBA
RGB	rgb(100, 109, 186)
HSL	hsl(234, 38%, 56%)
HSV	hsv(234, 46%, 73%)
CMYK	cmyk(46.2%, 41.4%, 0%, 27.1%)
CIE-LAB	lab(48.50, 17.31, -41.78)
CIE-LCH	lch(48.50, 45.22, 292.50°)
OKLab	oklab(56.26% 0.0141 -0.1181)
OKLCH	oklch(56.26% 0.119 276.8)
XYZ	xyz(19.5844, 17.1907, 48.7311)
Luminance	0.1719 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DBA #BAB164

analogous

#6498BA #646DBA #8664BA

triadic

#646DBA #BA646D #6DBA64

tetradic

#646DBA #BA6498 #BAB164 #64BA86

square

#646DBA #BA6498 #BAB164 #64BA86

split-complementary

#646DBA #BA8664 #98BA64

monochromatic

#323971 #454E9C #646DBA #8E95CD #B9BDE0

Accessibility & contrast

On white

4.73

#646DBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#646DBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DBA

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DBA	#FFFFFF	#000000	##FFFFFF
##646DBA	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5077BD

Deuteranopia (green-blind)

#4970B8

Tritanopia (blue-blind)

#467D8A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646dba;
/* rgb */ color: rgb(100, 109, 186);
/* oklch */ color: oklch(56.3% 0.119 276.8);

Tailwind

colors: {
  custom: {
    50: '#9596cf',
    500: '#646dba',
    950: '#000000',
  },
}

SCSS

$custom: #646dba;
$custom-light: #9596cf;
$custom-dark: #000000;

JSON

{
  "hex": "#646dba",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 186
  },
  "hsl": {
    "h": 233.721,
    "s": 38.393,
    "l": 56.078
  },
  "oklch": {
    "l": 0.56256,
    "c": 0.11892,
    "h": 276.8
  },
  "luminance": 0.17192
}

Semantic roles & 50–950 ramp

primary

#646DBA

secondary

#CFCBAB

accent

#C259CE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646DBA

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

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