#3963C4#3963C4

#3963C4 is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.3% C 0.159 H 264.1°. Best body text is #FFFFFF at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#3963C4
RGB	rgb(57, 99, 196)
HSL	hsl(222, 55%, 50%)
HSV	hsv(222, 71%, 77%)
CMYK	cmyk(70.9%, 49.5%, 0%, 23.1%)
CIE-LAB	lab(43.91, 18.46, -55.04)
CIE-LCH	lch(43.91, 58.05, 288.55°)
OKLab	oklab(52.29% -0.0164 -0.158)
OKLCH	oklch(52.29% 0.159 264.1)
XYZ	xyz(16.1095, 13.7774, 54.0242)
Luminance	0.1378 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963C4 #C49A39

analogous

#39A8C4 #3963C4 #5539C4

triadic

#3963C4 #C43963 #63C439

tetradic

#3963C4 #C439A8 #C49A39 #39C455

square

#3963C4 #C439A8 #C49A39 #39C455

split-complementary

#3963C4 #C45539 #A8C439

monochromatic

#1D3365 #2B4B95 #3963C4 #6788D3 #97ADE1

Accessibility & contrast

On white

5.59

#3963C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#3963C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963C4

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963C4	#FFFFFF	#000000	##FFFFFF
##3963C4	1.00	5.59	3.76	5.59
#FFFFFF	5.59	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B6FC8

Deuteranopia (green-blind)

#0062C2

Tritanopia (blue-blind)

#007A8A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3963c4;
/* rgb */ color: rgb(57, 99, 196);
/* oklch */ color: oklch(52.3% 0.159 264.1);

Tailwind

colors: {
  custom: {
    50: '#808ed6',
    500: '#3963c4',
    950: '#000000',
  },
}

SCSS

$custom: #3963c4;
$custom-light: #808ed6;
$custom-dark: #000000;

JSON

{
  "hex": "#3963c4",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 196
  },
  "hsl": {
    "h": 221.871,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52289,
    "c": 0.15886,
    "h": 264.1
  },
  "luminance": 0.13779
}

Semantic roles & 50–950 ramp

primary

#3963C4

secondary

#CCB98D

accent

#B14ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3963C4

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

Preview Lab → · Contrast checker → · Palette generator →