#3966AA#3966AA

#3966AA is a mid, moderate blue. Relative luminance 0.133; OKLCH L 51.2% C 0.119 H 258.5°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3966AA
RGB	rgb(57, 102, 170)
HSL	hsl(216, 50%, 45%)
HSV	hsv(216, 66%, 67%)
CMYK	cmyk(66.5%, 40%, 0%, 33.3%)
CIE-LAB	lab(43.17, 7.05, -41.05)
CIE-LCH	lch(43.17, 41.66, 279.75°)
OKLab	oklab(51.21% -0.0238 -0.1169)
OKLCH	oklch(51.21% 0.119 258.5)
XYZ	xyz(13.6918, 13.2735, 39.8629)
Luminance	0.1328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966AA #AA7D39

analogous

#399FAA #3966AA #4439AA

triadic

#3966AA #AA3966 #66AA39

tetradic

#3966AA #AA399F #AA7D39 #39AA44

square

#3966AA #AA399F #AA7D39 #39AA44

split-complementary

#3966AA #AA4439 #9FAA39

monochromatic

#1A2F4E #2A4B7C #3966AA #5985C7 #87A7D7

Accessibility & contrast

On white

5.75

#3966AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#3966AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966AA

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966AA	#FFFFFF	#000000	##FFFFFF
##3966AA	1.00	5.75	3.66	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476CAD

Deuteranopia (green-blind)

#3761A9

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3966aa;
/* rgb */ color: rgb(57, 102, 170);
/* oklch */ color: oklch(51.2% 0.119 258.5);

Tailwind

colors: {
  custom: {
    50: '#7b91c4',
    500: '#3966aa',
    950: '#000000',
  },
}

SCSS

$custom: #3966aa;
$custom-light: #7b91c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3966aa",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 170
  },
  "hsl": {
    "h": 216.106,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51208,
    "c": 0.11928,
    "h": 258.5
  },
  "luminance": 0.13275
}

Semantic roles & 50–950 ramp

primary

#3966AA

secondary

#C1A67E

accent

#A24ED9

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3966AA

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

Preview Lab → · Contrast checker → · Palette generator →