#3960B4#3960B4

#3960B4 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.5% C 0.140 H 263.5°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#3960B4
RGB	rgb(57, 96, 180)
HSL	hsl(221, 52%, 46%)
HSV	hsv(221, 68%, 71%)
CMYK	cmyk(68.3%, 46.7%, 0%, 29.4%)
CIE-LAB	lab(42.05, 14.52, -48.73)
CIE-LCH	lch(42.05, 50.85, 286.60°)
OKLab	oklab(50.53% -0.016 -0.1395)
OKLCH	oklch(50.53% 0.14 263.5)
XYZ	xyz(14.1055, 12.5295, 44.8462)
Luminance	0.1253 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3960B4 #B48D39

analogous

#399EB4 #3960B4 #5039B4

triadic

#3960B4 #B43960 #60B439

tetradic

#3960B4 #B4399E #B48D39 #39B450

square

#3960B4 #B4399E #B48D39 #39B450

split-complementary

#3960B4 #B45039 #9EB439

monochromatic

#1C2E57 #2A4786 #3960B4 #5E81CC #8DA5DB

Accessibility & contrast

On white

5.99

#3960B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#3960B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3960B4

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3960B4	#FFFFFF	#000000	##FFFFFF
##3960B4	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3569B7

Deuteranopia (green-blind)

#1C5EB2

Tritanopia (blue-blind)

#007381

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3960b4;
/* rgb */ color: rgb(57, 96, 180);
/* oklch */ color: oklch(50.5% 0.140 263.5);

Tailwind

colors: {
  custom: {
    50: '#7d8ccb',
    500: '#3960b4',
    950: '#000000',
  },
}

SCSS

$custom: #3960b4;
$custom-light: #7d8ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#3960b4",
  "rgb": {
    "r": 57,
    "g": 96,
    "b": 180
  },
  "hsl": {
    "h": 220.976,
    "s": 51.899,
    "l": 46.471
  },
  "oklch": {
    "l": 0.50531,
    "c": 0.14041,
    "h": 263.5
  },
  "luminance": 0.12531
}

Semantic roles & 50–950 ramp

primary

#3960B4

secondary

#C5B083

accent

#AE4CDB

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3960B4

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

Preview Lab → · Contrast checker → · Palette generator →