#3945B9#3945B9

#3945B9 is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.5% C 0.181 H 272.4°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#3945B9
RGB	rgb(57, 69, 185)
HSL	hsl(234, 53%, 47%)
HSV	hsv(234, 69%, 73%)
CMYK	cmyk(69.2%, 62.7%, 0%, 27.5%)
CIE-LAB	lab(35.26, 33.80, -62.66)
CIE-LCH	lch(35.26, 71.20, 298.35°)
OKLab	oklab(45.54% 0.0075 -0.1808)
OKLCH	oklch(45.54% 0.181 272.4)
XYZ	xyz(12.5695, 8.6277, 46.8924)
Luminance	0.0863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3945B9 #B9AD39

analogous

#3985B9 #3945B9 #6D39B9

triadic

#3945B9 #B93945 #45B939

tetradic

#3945B9 #B93985 #B9AD39 #39B96D

square

#3945B9 #B93985 #B9AD39 #39B96D

split-complementary

#3945B9 #B96D39 #85B939

monochromatic

#1C225B #2B348A #3945B9 #616BCE #9097DD

Accessibility & contrast

On white

7.70

#3945B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3945B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3945B9

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3945B9	#FFFFFF	#000000	##FFFFFF
##3945B9	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BD

Deuteranopia (green-blind)

#004DB7

Tritanopia (blue-blind)

#006378

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3945b9;
/* rgb */ color: rgb(57, 69, 185);
/* oklch */ color: oklch(45.5% 0.181 272.4);

Tailwind

colors: {
  custom: {
    50: '#8078cf',
    500: '#3945b9',
    950: '#000000',
  },
}

SCSS

$custom: #3945b9;
$custom-light: #8078cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3945b9",
  "rgb": {
    "r": 57,
    "g": 69,
    "b": 185
  },
  "hsl": {
    "h": 234.375,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45538,
    "c": 0.18099,
    "h": 272.4
  },
  "luminance": 0.08629
}

Semantic roles & 50–950 ramp

primary

#3945B9

secondary

#C8C186

accent

#CF4BDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3945B9

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

Preview Lab → · Contrast checker → · Palette generator →