#3839BB#3839BB

#3839BB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.198 H 274.2°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3839BB
RGB	rgb(56, 57, 187)
HSL	hsl(240, 54%, 48%)
HSV	hsv(240, 70%, 73%)
CMYK	cmyk(70.1%, 69.5%, 0%, 26.7%)
CIE-LAB	lab(32.60, 41.78, -68.20)
CIE-LCH	lch(32.60, 79.98, 301.49°)
OKLab	oklab(43.64% 0.0145 -0.1971)
OKLCH	oklch(43.64% 0.198 274.2)
XYZ	xyz(12.0607, 7.3537, 47.7879)
Luminance	0.0736 (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

#3839BB #BBBA38

analogous

#387ABB #3839BB #7838BB

triadic

#3839BB #BB3839 #39BB38

tetradic

#3839BB #BB387A #BBBA38 #38BB78

square

#3839BB #BB387A #BBBA38 #38BB78

split-complementary

#3839BB #BB7838 #7ABB38

monochromatic

#1C1C5D #2A2B8C #3839BB #6161D0 #9090DE

Accessibility & contrast

On white

8.50

#3839BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3839BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3839BB

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3839BB	#FFFFFF	#000000	##FFFFFF
##3839BB	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3839bb;
/* rgb */ color: rgb(56, 57, 187);
/* oklch */ color: oklch(43.6% 0.198 274.2);

Tailwind

colors: {
  custom: {
    50: '#8170d1',
    500: '#3839bb',
    950: '#000000',
  },
}

SCSS

$custom: #3839bb;
$custom-light: #8170d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3839bb",
  "rgb": {
    "r": 56,
    "g": 57,
    "b": 187
  },
  "hsl": {
    "h": 239.542,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43641,
    "c": 0.19765,
    "h": 274.2
  },
  "luminance": 0.07355
}

Semantic roles & 50–950 ramp

primary

#3839BB

secondary

#C8C886

accent

#DC4BDD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3839BB

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

Preview Lab → · Contrast checker → · Palette generator →