#646DB6#646DB6

#646DB6 is a mid, moderate blue. Relative luminance 0.170; OKLCH L 56.0% C 0.113 H 276.8°. Best body text is #FFFFFF at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#646DB6
RGB	rgb(100, 109, 182)
HSL	hsl(233, 36%, 55%)
HSV	hsv(233, 45%, 71%)
CMYK	cmyk(45.1%, 40.1%, 0%, 28.6%)
CIE-LAB	lab(48.29, 16.09, -39.79)
CIE-LCH	lch(48.29, 42.92, 292.02°)
OKLab	oklab(56.03% 0.0133 -0.1123)
OKLCH	oklch(56.03% 0.113 276.8)
XYZ	xyz(19.1651, 17.0230, 46.5228)
Luminance	0.1702 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DB6 #B6AD64

analogous

#6496B6 #646DB6 #8464B6

triadic

#646DB6 #B6646D #6DB664

tetradic

#646DB6 #B66496 #B6AD64 #64B684

square

#646DB6 #B66496 #B6AD64 #64B684

split-complementary

#646DB6 #B68464 #96B664

monochromatic

#33396C #474F96 #646DB6 #8E94CA #B7BBDD

Accessibility & contrast

On white

4.77

#646DB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#646DB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DB6

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DB6	#FFFFFF	#000000	##FFFFFF
##646DB6	1.00	4.77	4.40	4.77
#FFFFFF	4.77	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5276B9

Deuteranopia (green-blind)

#4C70B4

Tritanopia (blue-blind)

#487C89

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646db6;
/* rgb */ color: rgb(100, 109, 182);
/* oklch */ color: oklch(56.0% 0.113 276.8);

Tailwind

colors: {
  custom: {
    50: '#9496cc',
    500: '#646db6',
    950: '#000000',
  },
}

SCSS

$custom: #646db6;
$custom-light: #9496cc;
$custom-dark: #000000;

JSON

{
  "hex": "#646db6",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 182
  },
  "hsl": {
    "h": 233.415,
    "s": 35.965,
    "l": 55.294
  },
  "oklch": {
    "l": 0.56026,
    "c": 0.11307,
    "h": 276.8
  },
  "luminance": 0.17024
}

Semantic roles & 50–950 ramp

primary

#646DB6

secondary

#CCC8AA

accent

#C05CCC

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646DB6

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

Preview Lab → · Contrast checker → · Palette generator →