#3E37B9#3E37B9

#3E37B9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.5% C 0.196 H 276.9°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#3E37B9
RGB	rgb(62, 55, 185)
HSL	hsl(243, 54%, 47%)
HSV	hsv(243, 70%, 73%)
CMYK	cmyk(66.5%, 70.3%, 0%, 27.5%)
CIE-LAB	lab(32.39, 43.01, -67.35)
CIE-LCH	lch(32.39, 79.91, 302.56°)
OKLab	oklab(43.54% 0.0234 -0.1945)
OKLCH	oklch(43.54% 0.196 276.9)
XYZ	xyz(12.1069, 7.2582, 46.6525)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 3.50

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E37B9 #B2B937

analogous

#3771B9 #3E37B9 #7F37B9

triadic

#3E37B9 #B93E37 #37B93E

tetradic

#3E37B9 #B93771 #B2B937 #37B97F

square

#3E37B9 #B93771 #B2B937 #37B97F

split-complementary

#3E37B9 #B97F37 #71B937

monochromatic

#1E1B5B #2E298A #3E37B9 #645ECF #928DDD

Accessibility & contrast

On white

8.57

#3E37B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3E37B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E37B9

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E37B9	#FFFFFF	#000000	##FFFFFF
##3E37B9	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BD

Deuteranopia (green-blind)

#0047B7

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3e37b9;
/* rgb */ color: rgb(62, 55, 185);
/* oklch */ color: oklch(43.5% 0.196 276.9);

Tailwind

colors: {
  custom: {
    50: '#836fcf',
    500: '#3e37b9',
    950: '#000000',
  },
}

SCSS

$custom: #3e37b9;
$custom-light: #836fcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3e37b9",
  "rgb": {
    "r": 62,
    "g": 55,
    "b": 185
  },
  "hsl": {
    "h": 243.231,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.43539,
    "c": 0.19589,
    "h": 276.9
  },
  "luminance": 0.07259
}

Semantic roles & 50–950 ramp

primary

#3E37B9

secondary

#C4C884

accent

#DE4AD6

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3E37B9

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

Preview Lab → · Contrast checker → · Palette generator →