#3964C1#3964C1

#3964C1 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.3% C 0.154 H 263.4°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#3964C1
RGB	rgb(57, 100, 193)
HSL	hsl(221, 54%, 49%)
HSV	hsv(221, 70%, 76%)
CMYK	cmyk(70.5%, 48.2%, 0%, 24.3%)
CIE-LAB	lab(43.99, 16.72, -53.17)
CIE-LCH	lch(43.99, 55.74, 287.46°)
OKLab	oklab(52.29% -0.0177 -0.1525)
OKLCH	oklch(52.29% 0.154 263.4)
XYZ	xyz(15.8667, 13.8328, 52.2755)
Luminance	0.1383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964C1 #C19639

analogous

#39A8C1 #3964C1 #5239C1

triadic

#3964C1 #C13964 #64C139

tetradic

#3964C1 #C139A8 #C19639 #39C152

square

#3964C1 #C139A8 #C19639 #39C152

split-complementary

#3964C1 #C15239 #A8C139

monochromatic

#1D3363 #2B4C92 #3964C1 #6688D2 #95ACE0

Accessibility & contrast

On white

5.58

#3964C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#3964C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964C1

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964C1	#FFFFFF	#000000	##FFFFFF
##3964C1	1.00	5.58	3.77	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316FC4

Deuteranopia (green-blind)

#0A62BF

Tritanopia (blue-blind)

#007A89

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3964c1;
/* rgb */ color: rgb(57, 100, 193);
/* oklch */ color: oklch(52.3% 0.154 263.4);

Tailwind

colors: {
  custom: {
    50: '#808fd4',
    500: '#3964c1',
    950: '#000000',
  },
}

SCSS

$custom: #3964c1;
$custom-light: #808fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3964c1",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 193
  },
  "hsl": {
    "h": 221.029,
    "s": 54.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.52288,
    "c": 0.15353,
    "h": 263.4
  },
  "luminance": 0.13834
}

Semantic roles & 50–950 ramp

primary

#3964C1

secondary

#CBB78B

accent

#AF4ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3964C1

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

Preview Lab → · Contrast checker → · Palette generator →