#3943B9#3943B9

#3943B9 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.2% C 0.183 H 272.8°. Best body text is #FFFFFF at 7.84:1 contrast (WCAG AA passes).

Color values

HEX	#3943B9
RGB	rgb(57, 67, 185)
HSL	hsl(235, 53%, 47%)
HSV	hsv(235, 69%, 73%)
CMYK	cmyk(69.2%, 63.8%, 0%, 27.5%)
CIE-LAB	lab(34.77, 35.07, -63.45)
CIE-LCH	lch(34.77, 72.50, 298.93°)
OKLab	oklab(45.18% 0.009 -0.1832)
OKLCH	oklch(45.18% 0.183 272.8)
XYZ	xyz(12.4485, 8.3858, 46.8521)
Luminance	0.0839 (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

#3943B9 #B9AF39

analogous

#3983B9 #3943B9 #6F39B9

triadic

#3943B9 #B93943 #43B939

tetradic

#3943B9 #B93983 #B9AF39 #39B96F

square

#3943B9 #B93983 #B9AF39 #39B96F

split-complementary

#3943B9 #B96F39 #83B939

monochromatic

#1C215B #2B328A #3943B9 #6169CE #9096DD

Accessibility & contrast

On white

7.84

#3943B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3943B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3943B9

7.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3943B9	#FFFFFF	#000000	##FFFFFF
##3943B9	1.00	7.84	2.68	7.84
#FFFFFF	7.84	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BD

Deuteranopia (green-blind)

#004CB7

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3943b9;
/* rgb */ color: rgb(57, 67, 185);
/* oklch */ color: oklch(45.2% 0.183 272.8);

Tailwind

colors: {
  custom: {
    50: '#8077cf',
    500: '#3943b9',
    950: '#000000',
  },
}

SCSS

$custom: #3943b9;
$custom-light: #8077cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3943b9",
  "rgb": {
    "r": 57,
    "g": 67,
    "b": 185
  },
  "hsl": {
    "h": 235.313,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45183,
    "c": 0.18338,
    "h": 272.8
  },
  "luminance": 0.08387
}

Semantic roles & 50–950 ramp

primary

#3943B9

secondary

#C8C286

accent

#D14BDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3943B9

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

Preview Lab → · Contrast checker → · Palette generator →