#3963AB#3963AB

#3963AB is a mid, vivid blue. Relative luminance 0.127; OKLCH L 50.6% C 0.124 H 260.5°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#3963AB
RGB	rgb(57, 99, 171)
HSL	hsl(218, 50%, 45%)
HSV	hsv(218, 67%, 67%)
CMYK	cmyk(66.7%, 42.1%, 0%, 32.9%)
CIE-LAB	lab(42.36, 9.32, -42.94)
CIE-LCH	lch(42.36, 43.94, 282.24°)
OKLab	oklab(50.6% -0.0206 -0.1224)
OKLCH	oklch(50.6% 0.124 260.5)
XYZ	xyz(13.4973, 12.7325, 40.2665)
Luminance	0.1273 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3963AB #AB8139

analogous

#399CAB #3963AB #4839AB

triadic

#3963AB #AB3963 #63AB39

tetradic

#3963AB #AB399C #AB8139 #39AB48

square

#3963AB #AB399C #AB8139 #39AB48

split-complementary

#3963AB #AB4839 #9CAB39

monochromatic

#1A2E4F #2A487D #3963AB #5982C8 #87A5D7

Accessibility & contrast

On white

5.92

#3963AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#3963AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3963AB

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3963AB	#FFFFFF	#000000	##FFFFFF
##3963AB	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#426AAE

Deuteranopia (green-blind)

#305FAA

Tritanopia (blue-blind)

#00747E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3963ab;
/* rgb */ color: rgb(57, 99, 171);
/* oklch */ color: oklch(50.6% 0.124 260.5);

Tailwind

colors: {
  custom: {
    50: '#7b8ec4',
    500: '#3963ab',
    950: '#000000',
  },
}

SCSS

$custom: #3963ab;
$custom-light: #7b8ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3963ab",
  "rgb": {
    "r": 57,
    "g": 99,
    "b": 171
  },
  "hsl": {
    "h": 217.895,
    "s": 50,
    "l": 44.706
  },
  "oklch": {
    "l": 0.50595,
    "c": 0.12416,
    "h": 260.5
  },
  "luminance": 0.12734
}

Semantic roles & 50–950 ramp

primary

#3963AB

secondary

#C1A97F

accent

#A64EDA

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3963AB

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

Preview Lab → · Contrast checker → · Palette generator →