#3964BF#3964BF

#3964BF is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.1% C 0.151 H 263.2°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3964BF
RGB	rgb(57, 100, 191)
HSL	hsl(221, 54%, 49%)
HSV	hsv(221, 70%, 75%)
CMYK	cmyk(70.2%, 47.6%, 0%, 25.1%)
CIE-LAB	lab(43.86, 15.99, -52.22)
CIE-LCH	lch(43.86, 54.61, 287.02°)
OKLab	oklab(52.15% -0.018 -0.1497)
OKLCH	oklch(52.15% 0.151 263.2)
XYZ	xyz(15.6452, 13.7442, 51.1085)
Luminance	0.1375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964BF #BF9439

analogous

#39A7BF #3964BF #5139BF

triadic

#3964BF #BF3964 #64BF39

tetradic

#3964BF #BF39A7 #BF9439 #39BF51

square

#3964BF #BF39A7 #BF9439 #39BF51

split-complementary

#3964BF #BF5139 #A7BF39

monochromatic

#1D3361 #2B4B90 #3964BF #6487D1 #93ACDF

Accessibility & contrast

On white

5.60

#3964BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3964BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964BF

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964BF	#FFFFFF	#000000	##FFFFFF
##3964BF	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336EC2

Deuteranopia (green-blind)

#1262BD

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3964bf;
/* rgb */ color: rgb(57, 100, 191);
/* oklch */ color: oklch(52.1% 0.151 263.2);

Tailwind

colors: {
  custom: {
    50: '#7f8fd3',
    500: '#3964bf',
    950: '#000000',
  },
}

SCSS

$custom: #3964bf;
$custom-light: #7f8fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3964bf",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 191
  },
  "hsl": {
    "h": 220.746,
    "s": 54.032,
    "l": 48.627
  },
  "oklch": {
    "l": 0.52149,
    "c": 0.15078,
    "h": 263.2
  },
  "luminance": 0.13746
}

Semantic roles & 50–950 ramp

primary

#3964BF

secondary

#CAB58A

accent

#AE4ADD

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3964BF

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

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