#3963C1#3963C1

#3963C1 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.1% C 0.155 H 263.8°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#3963C1
RGB	rgb(57, 99, 193)
HSL	hsl(221, 54%, 49%)
HSV	hsv(221, 70%, 76%)
CMYK	cmyk(70.5%, 48.7%, 0%, 24.3%)
CIE-LAB	lab(43.72, 17.36, -53.62)
CIE-LCH	lch(43.72, 56.36, 287.94°)
OKLab	oklab(52.08% -0.0168 -0.1538)
OKLCH	oklch(52.08% 0.155 263.8)
XYZ	xyz(15.7714, 13.6422, 52.2438)
Luminance	0.1364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963C1 #C19739

analogous

#39A7C1 #3963C1 #5339C1

triadic

#3963C1 #C13963 #63C139

tetradic

#3963C1 #C139A7 #C19739 #39C153

square

#3963C1 #C139A7 #C19739 #39C153

split-complementary

#3963C1 #C15339 #A7C139

monochromatic

#1D3363 #2B4B92 #3963C1 #6687D2 #95ACE0

Accessibility & contrast

On white

5.63

#3963C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#3963C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963C1

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963C1	#FFFFFF	#000000	##FFFFFF
##3963C1	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F6EC4

Deuteranopia (green-blind)

#0361BF

Tritanopia (blue-blind)

#007989

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3963c1;
/* rgb */ color: rgb(57, 99, 193);
/* oklch */ color: oklch(52.1% 0.155 263.8);

Tailwind

colors: {
  custom: {
    50: '#808ed4',
    500: '#3963c1',
    950: '#000000',
  },
}

SCSS

$custom: #3963c1;
$custom-light: #808ed4;
$custom-dark: #000000;

JSON

{
  "hex": "#3963c1",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 193
  },
  "hsl": {
    "h": 221.471,
    "s": 54.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.52076,
    "c": 0.15475,
    "h": 263.8
  },
  "luminance": 0.13644
}

Semantic roles & 50–950 ramp

primary

#3963C1

secondary

#CBB78B

accent

#B04ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3963C1

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

Preview Lab → · Contrast checker → · Palette generator →