#646CB9#646CB9

#646CB9 is a mid, moderate blue. Relative luminance 0.169; OKLCH L 56.0% C 0.119 H 277.3°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#646CB9
RGB	rgb(100, 108, 185)
HSL	hsl(234, 38%, 56%)
HSV	hsv(234, 46%, 73%)
CMYK	cmyk(45.9%, 41.6%, 0%, 27.5%)
CIE-LAB	lab(48.18, 17.62, -41.71)
CIE-LCH	lch(48.18, 45.27, 292.90°)
OKLab	oklab(55.99% 0.0152 -0.1179)
OKLCH	oklch(55.99% 0.119 277.3)
XYZ	xyz(19.3724, 16.9362, 48.1378)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CB9 #B9B164

analogous

#6496B9 #646CB9 #8664B9

triadic

#646CB9 #B9646C #6CB964

tetradic

#646CB9 #B96496 #B9B164 #64B986

square

#646CB9 #B96496 #B9B164 #64B986

split-complementary

#646CB9 #B98664 #96B964

monochromatic

#333870 #464E9A #646CB9 #8E94CC #B8BCDF

Accessibility & contrast

On white

4.79

#646CB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#646CB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CB9

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CB9	#FFFFFF	#000000	##FFFFFF
##646CB9	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F76BC

Deuteranopia (green-blind)

#486FB7

Tritanopia (blue-blind)

#467C89

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646cb9;
/* rgb */ color: rgb(100, 108, 185);
/* oklch */ color: oklch(56.0% 0.119 277.3);

Tailwind

colors: {
  custom: {
    50: '#9596ce',
    500: '#646cb9',
    950: '#000000',
  },
}

SCSS

$custom: #646cb9;
$custom-light: #9596ce;
$custom-dark: #000000;

JSON

{
  "hex": "#646cb9",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 185
  },
  "hsl": {
    "h": 234.353,
    "s": 37.778,
    "l": 55.882
  },
  "oklch": {
    "l": 0.55994,
    "c": 0.11884,
    "h": 277.3
  },
  "luminance": 0.16937
}

Semantic roles & 50–950 ramp

primary

#646CB9

secondary

#CECBAB

accent

#C35ACE

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646CB9

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

Preview Lab → · Contrast checker → · Palette generator →