#3940A9#3940A9

#3940A9 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.166 H 274.2°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#3940A9
RGB	rgb(57, 64, 169)
HSL	hsl(236, 50%, 44%)
HSV	hsv(236, 66%, 66%)
CMYK	cmyk(66.3%, 62.1%, 0%, 33.7%)
CIE-LAB	lab(32.70, 31.35, -57.33)
CIE-LCH	lch(32.70, 65.34, 298.68°)
OKLab	oklab(43.24% 0.0122 -0.1652)
OKLCH	oklch(43.24% 0.166 274.2)
XYZ	xyz(10.6798, 7.4003, 38.3940)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3940A9 #A9A239

analogous

#3978A9 #3940A9 #6A39A9

triadic

#3940A9 #A93940 #40A939

tetradic

#3940A9 #A93978 #A9A239 #39A96A

square

#3940A9 #A93978 #A9A239 #39A96A

split-complementary

#3940A9 #A96A39 #78A939

monochromatic

#1A1D4D #2A2F7B #3940A9 #585FC7 #868BD6

Accessibility & contrast

On white

8.47

#3940A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3940A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940A9

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940A9	#FFFFFF	#000000	##FFFFFF
##3940A9	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3940a9;
/* rgb */ color: rgb(57, 64, 169);
/* oklch */ color: oklch(43.2% 0.166 274.2);

Tailwind

colors: {
  custom: {
    50: '#7d75c3',
    500: '#3940a9',
    950: '#000000',
  },
}

SCSS

$custom: #3940a9;
$custom-light: #7d75c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3940a9",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 169
  },
  "hsl": {
    "h": 236.25,
    "s": 49.558,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43244,
    "c": 0.16567,
    "h": 274.2
  },
  "luminance": 0.07401
}

Semantic roles & 50–950 ramp

primary

#3940A9

secondary

#C0BC7E

accent

#D04FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940A9

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

Preview Lab → · Contrast checker → · Palette generator →