#3963B2#3963B2

#3963B2 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.0% C 0.134 H 261.8°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#3963B2
RGB	rgb(57, 99, 178)
HSL	hsl(219, 51%, 46%)
HSV	hsv(219, 68%, 70%)
CMYK	cmyk(68%, 44.4%, 0%, 30.2%)
CIE-LAB	lab(42.77, 11.87, -46.39)
CIE-LCH	lch(42.77, 47.88, 284.35°)
OKLab	oklab(51.05% -0.0192 -0.1326)
OKLCH	oklch(51.05% 0.134 261.8)
XYZ	xyz(14.1822, 13.0065, 43.8739)
Luminance	0.1301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963B2 #B28839

analogous

#399FB2 #3963B2 #4C39B2

triadic

#3963B2 #B23963 #63B239

tetradic

#3963B2 #B2399F #B28839 #39B24C

square

#3963B2 #B2399F #B28839 #39B24C

split-complementary

#3963B2 #B24C39 #9FB239

monochromatic

#1B2F55 #2A4984 #3963B2 #5D83CB #8BA7DA

Accessibility & contrast

On white

5.83

#3963B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3963B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963B2

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963B2	#FFFFFF	#000000	##FFFFFF
##3963B2	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6BB5

Deuteranopia (green-blind)

#2860B0

Tritanopia (blue-blind)

#007582

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3963b2;
/* rgb */ color: rgb(57, 99, 178);
/* oklch */ color: oklch(51.0% 0.134 261.8);

Tailwind

colors: {
  custom: {
    50: '#7d8ec9',
    500: '#3963b2',
    950: '#000000',
  },
}

SCSS

$custom: #3963b2;
$custom-light: #7d8ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3963b2",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 178
  },
  "hsl": {
    "h": 219.174,
    "s": 51.489,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5105,
    "c": 0.13396,
    "h": 261.8
  },
  "luminance": 0.13008
}

Semantic roles & 50–950 ramp

primary

#3963B2

secondary

#C4AD82

accent

#AA4DDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3963B2

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

Preview Lab → · Contrast checker → · Palette generator →