#3939BC#3939BC

#3939BC is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.8% C 0.199 H 274.5°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#3939BC
RGB	rgb(57, 57, 188)
HSL	hsl(240, 53%, 48%)
HSV	hsv(240, 70%, 74%)
CMYK	cmyk(69.7%, 69.7%, 0%, 26.3%)
CIE-LAB	lab(32.76, 42.23, -68.53)
CIE-LCH	lch(32.76, 80.49, 301.64°)
OKLab	oklab(43.8% 0.0155 -0.198)
OKLCH	oklch(43.8% 0.199 274.5)
XYZ	xyz(12.2246, 7.4258, 48.3563)
Luminance	0.0743 (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

#3939BC #BCBC39

analogous

#397ABC #3939BC #7A39BC

triadic

#3939BC #BC3939 #39BC39

tetradic

#3939BC #BC397A #BCBC39 #39BC7A

square

#3939BC #BC397A #BCBC39 #39BC7A

split-complementary

#3939BC #BC7A39 #7ABC39

monochromatic

#1D1D5E #2B2B8D #3939BC #6363D0 #9292DE

Accessibility & contrast

On white

8.45

#3939BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3939BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3939BC

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3939BC	#FFFFFF	#000000	##FFFFFF
##3939BC	1.00	8.45	2.49	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C0

Deuteranopia (green-blind)

#0047BA

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3939bc;
/* rgb */ color: rgb(57, 57, 188);
/* oklch */ color: oklch(43.8% 0.199 274.5);

Tailwind

colors: {
  custom: {
    50: '#8270d1',
    500: '#3939bc',
    950: '#000000',
  },
}

SCSS

$custom: #3939bc;
$custom-light: #8270d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3939bc",
  "rgb": {
    "r": 57,
    "g": 57,
    "b": 188
  },
  "hsl": {
    "h": 240,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.43801,
    "c": 0.19866,
    "h": 274.5
  },
  "luminance": 0.07427
}

Semantic roles & 50–950 ramp

primary

#3939BC

secondary

#C9C988

accent

#DD4BDD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3939BC

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

Preview Lab → · Contrast checker → · Palette generator →