#3940B8#3940B8

#3940B8 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.6% C 0.186 H 273.5°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#3940B8
RGB	rgb(57, 64, 184)
HSL	hsl(237, 53%, 47%)
HSV	hsv(237, 69%, 72%)
CMYK	cmyk(69%, 65.2%, 0%, 27.8%)
CIE-LAB	lab(33.98, 36.60, -64.17)
CIE-LCH	lch(33.98, 73.87, 299.70°)
OKLab	oklab(44.57% 0.0113 -0.1853)
OKLCH	oklch(44.57% 0.186 273.5)
XYZ	xyz(12.1696, 7.9962, 46.2402)
Luminance	0.0800 (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

#3940B8 #B8B139

analogous

#3980B8 #3940B8 #7239B8

triadic

#3940B8 #B83940 #40B839

tetradic

#3940B8 #B83980 #B8B139 #39B872

square

#3940B8 #B83980 #B8B139 #39B872

split-complementary

#3940B8 #B87239 #80B839

monochromatic

#1C1F5B #2B3089 #3940B8 #6066CE #8F93DC

Accessibility & contrast

On white

8.08

#3940B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3940B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940B8

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940B8	#FFFFFF	#000000	##FFFFFF
##3940B8	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BC

Deuteranopia (green-blind)

#004AB6

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3940b8;
/* rgb */ color: rgb(57, 64, 184);
/* oklch */ color: oklch(44.6% 0.186 273.5);

Tailwind

colors: {
  custom: {
    50: '#8075ce',
    500: '#3940b8',
    950: '#000000',
  },
}

SCSS

$custom: #3940b8;
$custom-light: #8075ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3940b8",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 184
  },
  "hsl": {
    "h": 236.693,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.44572,
    "c": 0.18562,
    "h": 273.5
  },
  "luminance": 0.07997
}

Semantic roles & 50–950 ramp

primary

#3940B8

secondary

#C7C386

accent

#D44CDC

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3940B8

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

Preview Lab → · Contrast checker → · Palette generator →