#646ABD#646ABD

#646ABD is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.8% C 0.127 H 278.3°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#646ABD
RGB	rgb(100, 106, 189)
HSL	hsl(236, 40%, 57%)
HSV	hsv(236, 47%, 74%)
CMYK	cmyk(47.1%, 43.9%, 0%, 25.9%)
CIE-LAB	lab(47.87, 20.07, -44.52)
CIE-LCH	lch(47.87, 48.83, 294.27°)
OKLab	oklab(55.83% 0.0184 -0.1261)
OKLCH	oklch(55.83% 0.127 278.3)
XYZ	xyz(19.5921, 16.6905, 50.3235)
Luminance	0.1669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ABD #BDB764

analogous

#6497BD #646ABD #8B64BD

triadic

#646ABD #BD646A #6ABD64

tetradic

#646ABD #BD6497 #BDB764 #64BD8B

square

#646ABD #BD6497 #BDB764 #64BD8B

split-complementary

#646ABD #BD8B64 #97BD64

monochromatic

#323675 #444AA0 #646ABD #8F93CF #BABDE2

Accessibility & contrast

On white

4.84

#646ABD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.34

#646ABD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646ABD

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ABD	#FFFFFF	#000000	##FFFFFF
##646ABD	1.00	4.84	4.34	4.84
#FFFFFF	4.84	1.00	21.00	1.00
#000000	4.34	21.00	1.00	21.00
##FFFFFF	4.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4975C0

Deuteranopia (green-blind)

#426EBB

Tritanopia (blue-blind)

#447B8A

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646abd;
/* rgb */ color: rgb(100, 106, 189);
/* oklch */ color: oklch(55.8% 0.127 278.3);

Tailwind

colors: {
  custom: {
    50: '#9594d1',
    500: '#646abd',
    950: '#000000',
  },
}

SCSS

$custom: #646abd;
$custom-light: #9594d1;
$custom-dark: #000000;

JSON

{
  "hex": "#646abd",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 189
  },
  "hsl": {
    "h": 235.955,
    "s": 40.271,
    "l": 56.667
  },
  "oklch": {
    "l": 0.55826,
    "c": 0.12743,
    "h": 278.3
  },
  "luminance": 0.16692
}

Semantic roles & 50–950 ramp

primary

#646ABD

secondary

#D1CEAC

accent

#C858D0

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646ABD

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

Preview Lab → · Contrast checker → · Palette generator →