#3939A8#3939A8

#3939A8 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.173 H 275.9°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#3939A8
RGB	rgb(57, 57, 168)
HSL	hsl(240, 49%, 44%)
HSV	hsv(240, 66%, 66%)
CMYK	cmyk(66.1%, 66.1%, 0%, 34.1%)
CIE-LAB	lab(30.93, 35.44, -59.62)
CIE-LCH	lch(30.93, 69.36, 300.73°)
OKLab	oklab(41.92% 0.0179 -0.172)
OKLCH	oklch(41.92% 0.173 275.9)
XYZ	xyz(10.2160, 6.6224, 37.7781)
Luminance	0.0662 (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

#3939A8 #A8A839

analogous

#3971A8 #3939A8 #7139A8

triadic

#3939A8 #A83939 #39A839

tetradic

#3939A8 #A83971 #A8A839 #39A871

square

#3939A8 #A83971 #A8A839 #39A871

split-complementary

#3939A8 #A87139 #71A839

monochromatic

#1A1A4D #29297A #3939A8 #5858C6 #8686D6

Accessibility & contrast

On white

9.03

#3939A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3939A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939A8

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939A8	#FFFFFF	#000000	##FFFFFF
##3939A8	1.00	9.03	2.32	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAB

Deuteranopia (green-blind)

#0044A6

Tritanopia (blue-blind)

#00566B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3939a8;
/* rgb */ color: rgb(57, 57, 168);
/* oklch */ color: oklch(41.9% 0.173 275.9);

Tailwind

colors: {
  custom: {
    50: '#7d70c3',
    500: '#3939a8',
    950: '#000000',
  },
}

SCSS

$custom: #3939a8;
$custom-light: #7d70c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3939a8",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 168
  },
  "hsl": {
    "h": 240,
    "s": 49.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41922,
    "c": 0.17292,
    "h": 275.9
  },
  "luminance": 0.06623
}

Semantic roles & 50–950 ramp

primary

#3939A8

secondary

#C0C07D

accent

#D94FD9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3939A8

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

Preview Lab → · Contrast checker → · Palette generator →