#3837BE#3837BE

#3837BE is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.6% C 0.204 H 274.3°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#3837BE
RGB	rgb(56, 55, 190)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 75%)
CMYK	cmyk(70.5%, 71.1%, 0%, 25.5%)
CIE-LAB	lab(32.46, 43.96, -70.20)
CIE-LCH	lch(32.46, 82.83, 302.05°)
OKLab	oklab(43.63% 0.0152 -0.203)
OKLCH	oklch(43.63% 0.204 274.3)
XYZ	xyz(12.2883, 7.2897, 49.4647)
Luminance	0.0729 (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

#3837BE #BDBE37

analogous

#377ABE #3837BE #7B37BE

triadic

#3837BE #BE3837 #37BE38

tetradic

#3837BE #BE377A #BDBE37 #37BE7B

square

#3837BE #BE377A #BDBE37 #37BE7B

split-complementary

#3837BE #BE7B37 #7ABE37

monochromatic

#1C1C5F #2A298F #3837BE #6261D1 #9190DF

Accessibility & contrast

On white

8.54

#3837BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3837BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3837BE

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3837BE	#FFFFFF	#000000	##FFFFFF
##3837BE	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C2

Deuteranopia (green-blind)

#0046BC

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3837be;
/* rgb */ color: rgb(56, 55, 190);
/* oklch */ color: oklch(43.6% 0.204 274.3);

Tailwind

colors: {
  custom: {
    50: '#826fd3',
    500: '#3837be',
    950: '#000000',
  },
}

SCSS

$custom: #3837be;
$custom-light: #826fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3837be",
  "rgb": {
    "r": 56,
    "g": 55,
    "b": 190
  },
  "hsl": {
    "h": 240.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.43627,
    "c": 0.20353,
    "h": 274.3
  },
  "luminance": 0.07291
}

Semantic roles & 50–950 ramp

primary

#3837BE

secondary

#C9CA87

accent

#DE49DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3837BE

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

Preview Lab → · Contrast checker → · Palette generator →