#3738BC#3738BC

#3738BC is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.5% C 0.200 H 273.9°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#3738BC
RGB	rgb(55, 56, 188)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 74%)
CMYK	cmyk(70.7%, 70.2%, 0%, 26.3%)
CIE-LAB	lab(32.41, 42.59, -69.09)
CIE-LCH	lch(32.41, 81.17, 301.65°)
OKLab	oklab(43.52% 0.0137 -0.1998)
OKLCH	oklch(43.52% 0.2 273.9)
XYZ	xyz(12.0638, 7.2702, 48.3347)
Luminance	0.0727 (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

#3738BC #BCBB37

analogous

#377ABC #3738BC #7937BC

triadic

#3738BC #BC3738 #38BC37

tetradic

#3738BC #BC377A #BCBB37 #37BC79

square

#3738BC #BC377A #BCBB37 #37BC79

split-complementary

#3738BC #BC7937 #7ABC37

monochromatic

#1B1C5D #292A8D #3738BC #6061D0 #8F90DE

Accessibility & contrast

On white

8.56

#3738BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3738BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738BC

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3738BC	#FFFFFF	#000000	##FFFFFF
##3738BC	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C0

Deuteranopia (green-blind)

#0046BA

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3738bc;
/* rgb */ color: rgb(55, 56, 188);
/* oklch */ color: oklch(43.5% 0.200 273.9);

Tailwind

colors: {
  custom: {
    50: '#8170d1',
    500: '#3738bc',
    950: '#000000',
  },
}

SCSS

$custom: #3738bc;
$custom-light: #8170d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3738bc",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 188
  },
  "hsl": {
    "h": 239.549,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43521,
    "c": 0.20023,
    "h": 273.9
  },
  "luminance": 0.07271
}

Semantic roles & 50–950 ramp

primary

#3738BC

secondary

#C9C886

accent

#DD4ADE

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3738BC

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

Preview Lab → · Contrast checker → · Palette generator →