#3964AC#3964AC

#3964AC is a mid, vivid blue. Relative luminance 0.130; OKLCH L 50.9% C 0.124 H 260.1°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3964AC
RGB	rgb(57, 100, 172)
HSL	hsl(218, 50%, 45%)
HSV	hsv(218, 67%, 67%)
CMYK	cmyk(66.9%, 41.9%, 0%, 32.5%)
CIE-LAB	lab(42.70, 9.04, -42.98)
CIE-LCH	lch(42.70, 43.92, 281.89°)
OKLab	oklab(50.88% -0.0214 -0.1225)
OKLCH	oklch(50.88% 0.124 260.1)
XYZ	xyz(13.6883, 12.9614, 40.8022)
Luminance	0.1296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964AC #AC8139

analogous

#399EAC #3964AC #4739AC

triadic

#3964AC #AC3964 #64AC39

tetradic

#3964AC #AC399E #AC8139 #39AC47

square

#3964AC #AC399E #AC8139 #39AC47

split-complementary

#3964AC #AC4739 #9EAC39

monochromatic

#1B2F50 #2A497E #3964AC #5A83C8 #88A6D8

Accessibility & contrast

On white

5.85

#3964AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3964AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964AC

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964AC	#FFFFFF	#000000	##FFFFFF
##3964AC	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#436BAF

Deuteranopia (green-blind)

#3160AB

Tritanopia (blue-blind)

#00757F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3964ac;
/* rgb */ color: rgb(57, 100, 172);
/* oklch */ color: oklch(50.9% 0.124 260.1);

Tailwind

colors: {
  custom: {
    50: '#7c8fc5',
    500: '#3964ac',
    950: '#000000',
  },
}

SCSS

$custom: #3964ac;
$custom-light: #7c8fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#3964ac",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 172
  },
  "hsl": {
    "h": 217.565,
    "s": 50.218,
    "l": 44.902
  },
  "oklch": {
    "l": 0.50883,
    "c": 0.12439,
    "h": 260.1
  },
  "luminance": 0.12963
}

Semantic roles & 50–950 ramp

primary

#3964AC

secondary

#C2A97F

accent

#A64EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3964AC

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

Preview Lab → · Contrast checker → · Palette generator →