#3837B2#3837B2

#3837B2 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.5% C 0.188 H 275.2°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#3837B2
RGB	rgb(56, 55, 178)
HSL	hsl(240, 53%, 46%)
HSV	hsv(240, 69%, 70%)
CMYK	cmyk(68.5%, 69.1%, 0%, 30.2%)
CIE-LAB	lab(31.32, 39.94, -64.97)
CIE-LCH	lch(31.32, 76.27, 301.58°)
OKLab	oklab(42.46% 0.017 -0.1877)
OKLCH	oklch(42.46% 0.188 275.2)
XYZ	xyz(11.0303, 6.7865, 42.8395)
Luminance	0.0679 (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

#3837B2 #B1B237

analogous

#3773B2 #3837B2 #7537B2

triadic

#3837B2 #B23837 #37B238

tetradic

#3837B2 #B23773 #B1B237 #37B275

square

#3837B2 #B23773 #B1B237 #37B275

split-complementary

#3837B2 #B27537 #73B237

monochromatic

#1B1A54 #292983 #3837B2 #5B5ACC #8A89DB

Accessibility & contrast

On white

8.91

#3837B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3837B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3837B2

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3837B2	#FFFFFF	#000000	##FFFFFF
##3837B2	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005870

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3837b2;
/* rgb */ color: rgb(56, 55, 178);
/* oklch */ color: oklch(42.5% 0.188 275.2);

Tailwind

colors: {
  custom: {
    50: '#7f6fca',
    500: '#3837b2',
    950: '#000000',
  },
}

SCSS

$custom: #3837b2;
$custom-light: #7f6fca;
$custom-dark: #000000;

JSON

{
  "hex": "#3837b2",
  "rgb": {
    "r": 56,
    "g": 55,
    "b": 178
  },
  "hsl": {
    "h": 240.488,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.42461,
    "c": 0.18845,
    "h": 275.2
  },
  "luminance": 0.06787
}

Semantic roles & 50–950 ramp

primary

#3837B2

secondary

#C4C580

accent

#DC4CDB

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3837B2

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

Preview Lab → · Contrast checker → · Palette generator →