#3939AA#3939AA

#3939AA is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.1% C 0.176 H 275.8°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3939AA
RGB	rgb(57, 57, 170)
HSL	hsl(240, 50%, 45%)
HSV	hsv(240, 66%, 67%)
CMYK	cmyk(66.5%, 66.5%, 0%, 33.3%)
CIE-LAB	lab(31.11, 36.13, -60.53)
CIE-LCH	lch(31.11, 70.49, 300.83°)
OKLab	oklab(42.11% 0.0177 -0.1747)
OKLCH	oklch(42.11% 0.176 275.8)
XYZ	xyz(10.4038, 6.6975, 38.7669)
Luminance	0.0670 (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

#3939AA #AAAA39

analogous

#3972AA #3939AA #7239AA

triadic

#3939AA #AA3939 #39AA39

tetradic

#3939AA #AA3972 #AAAA39 #39AA72

square

#3939AA #AA3972 #AAAA39 #39AA72

split-complementary

#3939AA #AA7239 #72AA39

monochromatic

#1A1A4E #2A2A7C #3939AA #5959C7 #8787D7

Accessibility & contrast

On white

8.98

#3939AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3939AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939AA

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939AA	#FFFFFF	#000000	##FFFFFF
##3939AA	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0044A8

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3939aa;
/* rgb */ color: rgb(57, 57, 170);
/* oklch */ color: oklch(42.1% 0.176 275.8);

Tailwind

colors: {
  custom: {
    50: '#7e70c4',
    500: '#3939aa',
    950: '#000000',
  },
}

SCSS

$custom: #3939aa;
$custom-light: #7e70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3939aa",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 170
  },
  "hsl": {
    "h": 240,
    "s": 49.78,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42105,
    "c": 0.17555,
    "h": 275.8
  },
  "luminance": 0.06698
}

Semantic roles & 50–950 ramp

primary

#3939AA

secondary

#C1C17E

accent

#D94ED9

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3939AA

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

Preview Lab → · Contrast checker → · Palette generator →