#646CA8#646CA8

#646CA8 is a mid, moderate blue. Relative luminance 0.163; OKLCH L 55.0% C 0.094 H 277.1°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#646CA8
RGB	rgb(100, 108, 168)
HSL	hsl(233, 28%, 53%)
HSV	hsv(233, 40%, 66%)
CMYK	cmyk(40.5%, 35.7%, 0%, 34.1%)
CIE-LAB	lab(47.31, 12.53, -33.17)
CIE-LCH	lch(47.31, 35.46, 290.70°)
OKLab	oklab(55.05% 0.0115 -0.093)
OKLCH	oklch(55.05% 0.094 277.1)
XYZ	xyz(17.6839, 16.2608, 39.2451)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA8 #A8A064

analogous

#648EA8 #646CA8 #7E64A8

triadic

#646CA8 #A8646C #6CA864

tetradic

#646CA8 #A8648E #A8A064 #64A87E

square

#646CA8 #A8648E #A8A064 #64A87E

split-complementary

#646CA8 #A87E64 #8EA864

monochromatic

#34395D #4A5184 #646CA8 #8B91BE #B2B6D4

Accessibility & contrast

On white

4.94

#646CA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#646CA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA8

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA8	#FFFFFF	#000000	##FFFFFF
##646CA8	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5873AA

Deuteranopia (green-blind)

#536EA7

Tritanopia (blue-blind)

#4F7882

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca8;
/* rgb */ color: rgb(100, 108, 168);
/* oklch */ color: oklch(55.0% 0.094 277.1);

Tailwind

colors: {
  custom: {
    50: '#9396c2',
    500: '#646ca8',
    950: '#000000',
  },
}

SCSS

$custom: #646ca8;
$custom-light: #9396c2;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca8",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 168
  },
  "hsl": {
    "h": 232.941,
    "s": 28.099,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55047,
    "c": 0.09372,
    "h": 277.1
  },
  "luminance": 0.16262
}

Semantic roles & 50–950 ramp

primary

#646CA8

secondary

#C3BFA5

accent

#B963C4

background

#F9F9FB

surface

#F1F1F7

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA8

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

Preview Lab → · Contrast checker → · Palette generator →