#3E40B2#3E40B2

#3E40B2 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.4% C 0.176 H 275.7°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#3E40B2
RGB	rgb(62, 64, 178)
HSL	hsl(239, 48%, 47%)
HSV	hsv(239, 65%, 70%)
CMYK	cmyk(65.2%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.78, 35.23, -60.92)
CIE-LCH	lch(33.78, 70.37, 300.04°)
OKLab	oklab(44.36% 0.0176 -0.1756)
OKLCH	oklch(44.36% 0.177 275.7)
XYZ	xyz(11.8533, 7.9043, 43.0119)
Luminance	0.0790 (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

#3E40B2 #B2B03E

analogous

#3E7AB2 #3E40B2 #763EB2

triadic

#3E40B2 #B23E40 #40B23E

tetradic

#3E40B2 #B23E7A #B2B03E #3EB276

square

#3E40B2 #B23E7A #B2B03E #3EB276

split-complementary

#3E40B2 #B2763E #7AB23E

monochromatic

#1E1F57 #2E3085 #3E40B2 #6466C9 #9293D9

Accessibility & contrast

On white

8.14

#3E40B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3E40B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40B2

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40B2	#FFFFFF	#000000	##FFFFFF
##3E40B2	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B6

Deuteranopia (green-blind)

#004AB0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3e40b2;
/* rgb */ color: rgb(62, 64, 178);
/* oklch */ color: oklch(44.4% 0.176 275.7);

Tailwind

colors: {
  custom: {
    50: '#8175ca',
    500: '#3e40b2',
    950: '#000000',
  },
}

SCSS

$custom: #3e40b2;
$custom-light: #8175ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40b2",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 238.966,
    "s": 48.333,
    "l": 47.059
  },
  "oklch": {
    "l": 0.44358,
    "c": 0.1765,
    "h": 275.7
  },
  "luminance": 0.07905
}

Semantic roles & 50–950 ramp

primary

#3E40B2

secondary

#C4C388

accent

#D650D8

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3E40B2

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

Preview Lab → · Contrast checker → · Palette generator →