#3964AB#3964AB

#3964AB is a mid, vivid blue. Relative luminance 0.129; OKLCH L 50.8% C 0.123 H 259.9°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3964AB
RGB	rgb(57, 100, 171)
HSL	hsl(217, 50%, 45%)
HSV	hsv(217, 67%, 67%)
CMYK	cmyk(66.7%, 41.5%, 0%, 32.9%)
CIE-LAB	lab(42.65, 8.68, -42.48)
CIE-LCH	lch(42.65, 43.36, 281.55°)
OKLab	oklab(50.82% -0.0216 -0.1211)
OKLCH	oklch(50.82% 0.123 259.9)
XYZ	xyz(13.5926, 12.9231, 40.2983)
Luminance	0.1292 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964AB #AB8039

analogous

#399DAB #3964AB #4739AB

triadic

#3964AB #AB3964 #64AB39

tetradic

#3964AB #AB399D #AB8039 #39AB47

square

#3964AB #AB399D #AB8039 #39AB47

split-complementary

#3964AB #AB4739 #9DAB39

monochromatic

#1A2E4F #2A497D #3964AB #5983C8 #87A5D7

Accessibility & contrast

On white

5.86

#3964AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#3964AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964AB

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964AB	#FFFFFF	#000000	##FFFFFF
##3964AB	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436AAE

Deuteranopia (green-blind)

#3260AA

Tritanopia (blue-blind)

#00747F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3964ab;
/* rgb */ color: rgb(57, 100, 171);
/* oklch */ color: oklch(50.8% 0.123 259.9);

Tailwind

colors: {
  custom: {
    50: '#7b8fc4',
    500: '#3964ab',
    950: '#000000',
  },
}

SCSS

$custom: #3964ab;
$custom-light: #7b8fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3964ab",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 171
  },
  "hsl": {
    "h": 217.368,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.50819,
    "c": 0.12299,
    "h": 259.9
  },
  "luminance": 0.12924
}

Semantic roles & 50–950 ramp

primary

#3964AB

secondary

#C1A87F

accent

#A54EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3964AB

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

Preview Lab → · Contrast checker → · Palette generator →