#3E37B8#3E37B8

#3E37B8 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.4% C 0.195 H 277.0°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#3E37B8
RGB	rgb(62, 55, 184)
HSL	hsl(243, 54%, 47%)
HSV	hsv(243, 70%, 72%)
CMYK	cmyk(66.3%, 70.1%, 0%, 27.8%)
CIE-LAB	lab(32.29, 42.68, -66.91)
CIE-LCH	lch(32.29, 79.37, 302.53°)
OKLab	oklab(43.44% 0.0236 -0.1932)
OKLCH	oklch(43.44% 0.195 277)
XYZ	xyz(12.0017, 7.2162, 46.0985)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.49

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E37B8 #B1B837

analogous

#3771B8 #3E37B8 #7F37B8

triadic

#3E37B8 #B83E37 #37B83E

tetradic

#3E37B8 #B83771 #B1B837 #37B87F

square

#3E37B8 #B83771 #B1B837 #37B87F

split-complementary

#3E37B8 #B87F37 #71B837

monochromatic

#1E1B5A #2E2989 #3E37B8 #645DCF #918DDD

Accessibility & contrast

On white

8.59

#3E37B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3E37B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E37B8

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E37B8	#FFFFFF	#000000	##FFFFFF
##3E37B8	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005A73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3e37b8;
/* rgb */ color: rgb(62, 55, 184);
/* oklch */ color: oklch(43.4% 0.195 277.0);

Tailwind

colors: {
  custom: {
    50: '#836fce',
    500: '#3e37b8',
    950: '#000000',
  },
}

SCSS

$custom: #3e37b8;
$custom-light: #836fce;
$custom-dark: #000000;

JSON

{
  "hex": "#3e37b8",
  "rgb": {
    "r": 62,
    "g": 55,
    "b": 184
  },
  "hsl": {
    "h": 243.256,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43443,
    "c": 0.19463,
    "h": 277
  },
  "luminance": 0.07217
}

Semantic roles & 50–950 ramp

primary

#3E37B8

secondary

#C4C784

accent

#DD4AD5

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3E37B8

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

Preview Lab → · Contrast checker → · Palette generator →