#646EA9#646EA9

#646EA9 is a mid, moderate blue. Relative luminance 0.167; OKLCH L 55.5% C 0.092 H 275.6°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#646EA9
RGB	rgb(100, 110, 169)
HSL	hsl(231, 29%, 53%)
HSV	hsv(231, 41%, 66%)
CMYK	cmyk(40.8%, 34.9%, 0%, 33.7%)
CIE-LAB	lab(47.91, 11.60, -32.82)
CIE-LCH	lch(47.91, 34.81, 289.47°)
OKLab	oklab(55.52% 0.0091 -0.092)
OKLCH	oklch(55.52% 0.092 275.6)
XYZ	xyz(17.9908, 16.7250, 39.8087)
Luminance	0.1673 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EA9 #A99F64

analogous

#6491A9 #646EA9 #7C64A9

triadic

#646EA9 #A9646E #6EA964

tetradic

#646EA9 #A96491 #A99F64 #64A97C

square

#646EA9 #A96491 #A99F64 #64A97C

split-complementary

#646EA9 #A97C64 #91A964

monochromatic

#343A5E #4A5386 #646EA9 #8B93BF #B3B8D5

Accessibility & contrast

On white

4.83

#646EA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#646EA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EA9

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EA9	#FFFFFF	#000000	##FFFFFF
##646EA9	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A75AB

Deuteranopia (green-blind)

#556FA8

Tritanopia (blue-blind)

#4E7A84

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646ea9;
/* rgb */ color: rgb(100, 110, 169);
/* oklch */ color: oklch(55.5% 0.092 275.6);

Tailwind

colors: {
  custom: {
    50: '#9397c3',
    500: '#646ea9',
    950: '#000000',
  },
}

SCSS

$custom: #646ea9;
$custom-light: #9397c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646ea9",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 169
  },
  "hsl": {
    "h": 231.304,
    "s": 28.631,
    "l": 52.745
  },
  "oklch": {
    "l": 0.55523,
    "c": 0.09244,
    "h": 275.6
  },
  "luminance": 0.16726
}

Semantic roles & 50–950 ramp

primary

#646EA9

secondary

#C3BFA5

accent

#B763C5

background

#F9F9FC

surface

#F1F2F8

border

#CBCCD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EA9

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

Preview Lab → · Contrast checker → · Palette generator →