#3738BD#3738BD

#3738BD is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.6% C 0.201 H 273.9°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#3738BD
RGB	rgb(55, 56, 189)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 74%)
CMYK	cmyk(70.9%, 70.4%, 0%, 25.9%)
CIE-LAB	lab(32.51, 42.93, -69.53)
CIE-LCH	lch(32.51, 81.71, 301.69°)
OKLab	oklab(43.62% 0.0136 -0.201)
OKLCH	oklch(43.62% 0.201 273.9)
XYZ	xyz(12.1720, 7.3135, 48.9044)
Luminance	0.0732 (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

#3738BD #BDBC37

analogous

#377BBD #3738BD #7937BD

triadic

#3738BD #BD3738 #38BD37

tetradic

#3738BD #BD377B #BDBC37 #37BD79

square

#3738BD #BD377B #BDBC37 #37BD79

split-complementary

#3738BD #BD7937 #7BBD37

monochromatic

#1B1C5E #292A8E #3738BD #6061D1 #9090DF

Accessibility & contrast

On white

8.53

#3738BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3738BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738BD

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3738BD	#FFFFFF	#000000	##FFFFFF
##3738BD	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C1

Deuteranopia (green-blind)

#0046BB

Tritanopia (blue-blind)

#005D76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3738bd;
/* rgb */ color: rgb(55, 56, 189);
/* oklch */ color: oklch(43.6% 0.201 273.9);

Tailwind

colors: {
  custom: {
    50: '#8170d2',
    500: '#3738bd',
    950: '#000000',
  },
}

SCSS

$custom: #3738bd;
$custom-light: #8170d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3738bd",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 189
  },
  "hsl": {
    "h": 239.552,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.43619,
    "c": 0.20148,
    "h": 273.9
  },
  "luminance": 0.07315
}

Semantic roles & 50–950 ramp

primary

#3738BD

secondary

#C9C986

accent

#DD4ADE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3738BD

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

Preview Lab → · Contrast checker → · Palette generator →