#646FB9#646FB9

#646FB9 is a mid, moderate blue. Relative luminance 0.176; OKLCH L 56.6% C 0.115 H 275.7°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#646FB9
RGB	rgb(100, 111, 185)
HSL	hsl(232, 38%, 56%)
HSV	hsv(232, 46%, 73%)
CMYK	cmyk(45.9%, 40%, 0%, 27.5%)
CIE-LAB	lab(48.98, 15.77, -40.43)
CIE-LCH	lch(48.98, 43.40, 291.31°)
OKLab	oklab(56.61% 0.0114 -0.1141)
OKLCH	oklch(56.61% 0.115 275.7)
XYZ	xyz(19.6942, 17.5799, 48.2451)
Luminance	0.1758 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FB9 #B9AE64

analogous

#6499B9 #646FB9 #8364B9

triadic

#646FB9 #B9646F #6FB964

tetradic

#646FB9 #B96499 #B9AE64 #64B983

square

#646FB9 #B96499 #B9AE64 #64B983

split-complementary

#646FB9 #B98364 #99B964

monochromatic

#333B70 #46519A #646FB9 #8E96CC #B8BDDF

Accessibility & contrast

On white

4.65

#646FB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#646FB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646FB9

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FB9	#FFFFFF	#000000	##FFFFFF
##646FB9	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5378BC

Deuteranopia (green-blind)

#4C71B7

Tritanopia (blue-blind)

#467E8B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646fb9;
/* rgb */ color: rgb(100, 111, 185);
/* oklch */ color: oklch(56.6% 0.115 275.7);

Tailwind

colors: {
  custom: {
    50: '#9498ce',
    500: '#646fb9',
    950: '#000000',
  },
}

SCSS

$custom: #646fb9;
$custom-light: #9498ce;
$custom-dark: #000000;

JSON

{
  "hex": "#646fb9",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 185
  },
  "hsl": {
    "h": 232.235,
    "s": 37.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.56608,
    "c": 0.11471,
    "h": 275.7
  },
  "luminance": 0.17581
}

Semantic roles & 50–950 ramp

primary

#646FB9

secondary

#CEC9AB

accent

#BF5ACE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D13

muted

#7E7E82

Preview Lab

Preview with #646FB9

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

Preview Lab → · Contrast checker → · Palette generator →