#3837AC#3837AC

#3837AC is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.181 H 275.6°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#3837AC
RGB	rgb(56, 55, 172)
HSL	hsl(241, 52%, 45%)
HSV	hsv(241, 68%, 67%)
CMYK	cmyk(67.4%, 68%, 0%, 32.5%)
CIE-LAB	lab(30.76, 37.90, -62.30)
CIE-LCH	lch(30.76, 72.92, 301.32°)
OKLab	oklab(41.89% 0.0177 -0.1799)
OKLCH	oklch(41.89% 0.181 275.6)
XYZ	xyz(10.4410, 6.5508, 39.7359)
Luminance	0.0655 (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

#3837AC #ABAC37

analogous

#3771AC #3837AC #7337AC

triadic

#3837AC #AC3837 #37AC38

tetradic

#3837AC #AC3771 #ABAC37 #37AC73

square

#3837AC #AC3771 #ABAC37 #37AC73

split-complementary

#3837AC #AC7337 #71AC37

monochromatic

#1A194F #29287E #3837AC #5857C9 #8685D8

Accessibility & contrast

On white

9.09

#3837AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3837AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3837AC

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3837AC	#FFFFFF	#000000	##FFFFFF
##3837AC	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00566D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3837ac;
/* rgb */ color: rgb(56, 55, 172);
/* oklch */ color: oklch(41.9% 0.181 275.6);

Tailwind

colors: {
  custom: {
    50: '#7e6ec6',
    500: '#3837ac',
    950: '#000000',
  },
}

SCSS

$custom: #3837ac;
$custom-light: #7e6ec6;
$custom-dark: #000000;

JSON

{
  "hex": "#3837ac",
  "rgb": {
    "r": 56,
    "g": 55,
    "b": 172
  },
  "hsl": {
    "h": 240.513,
    "s": 51.542,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41891,
    "c": 0.18074,
    "h": 275.6
  },
  "luminance": 0.06552
}

Semantic roles & 50–950 ramp

primary

#3837AC

secondary

#C1C27D

accent

#DB4DDA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3837AC

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

Preview Lab → · Contrast checker → · Palette generator →