#3940A8#3940A8

#3940A8 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.164 H 274.3°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#3940A8
RGB	rgb(57, 64, 168)
HSL	hsl(236, 49%, 44%)
HSV	hsv(236, 66%, 66%)
CMYK	cmyk(66.1%, 61.9%, 0%, 34.1%)
CIE-LAB	lab(32.62, 31.00, -56.86)
CIE-LCH	lch(32.62, 64.77, 298.60°)
OKLab	oklab(43.16% 0.0122 -0.1639)
OKLCH	oklch(43.16% 0.164 274.3)
XYZ	xyz(10.5863, 7.3629, 37.9015)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3940A8 #A8A139

analogous

#3978A8 #3940A8 #6A39A8

triadic

#3940A8 #A83940 #40A839

tetradic

#3940A8 #A83978 #A8A139 #39A86A

square

#3940A8 #A83978 #A8A139 #39A86A

split-complementary

#3940A8 #A86A39 #78A839

monochromatic

#1A1D4D #292F7A #3940A8 #585FC6 #868BD6

Accessibility & contrast

On white

8.49

#3940A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3940A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3940A8

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3940A8	#FFFFFF	#000000	##FFFFFF
##3940A8	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AB

Deuteranopia (green-blind)

#0048A6

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3940a8;
/* rgb */ color: rgb(57, 64, 168);
/* oklch */ color: oklch(43.2% 0.164 274.3);

Tailwind

colors: {
  custom: {
    50: '#7d75c3',
    500: '#3940a8',
    950: '#000000',
  },
}

SCSS

$custom: #3940a8;
$custom-light: #7d75c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3940a8",
  "rgb": {
    "r": 57,
    "g": 64,
    "b": 168
  },
  "hsl": {
    "h": 236.216,
    "s": 49.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43158,
    "c": 0.16431,
    "h": 274.3
  },
  "luminance": 0.07364
}

Semantic roles & 50–950 ramp

primary

#3940A8

secondary

#C0BC7D

accent

#D04FD9

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3940A8

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

Preview Lab → · Contrast checker → · Palette generator →