#3E40B4#3E40B4

#3E40B4 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.5% C 0.179 H 275.6°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#3E40B4
RGB	rgb(62, 64, 180)
HSL	hsl(239, 49%, 47%)
HSV	hsv(239, 66%, 71%)
CMYK	cmyk(65.6%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(33.95, 35.91, -61.83)
CIE-LCH	lch(33.95, 71.50, 300.15°)
OKLab	oklab(44.53% 0.0174 -0.1783)
OKLCH	oklch(44.53% 0.179 275.6)
XYZ	xyz(12.0555, 7.9852, 44.0772)
Luminance	0.0799 (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

#3E40B4 #B4B23E

analogous

#3E7BB4 #3E40B4 #773EB4

triadic

#3E40B4 #B43E40 #40B43E

tetradic

#3E40B4 #B43E7B #B4B23E #3EB477

square

#3E40B4 #B43E7B #B4B23E #3EB477

split-complementary

#3E40B4 #B4773E #7BB43E

monochromatic

#1F2059 #2E3086 #3E40B4 #6567CA #9394DA

Accessibility & contrast

On white

8.09

#3E40B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3E40B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40B4

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40B4	#FFFFFF	#000000	##FFFFFF
##3E40B4	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B8

Deuteranopia (green-blind)

#004BB2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3e40b4;
/* rgb */ color: rgb(62, 64, 180);
/* oklch */ color: oklch(44.5% 0.179 275.6);

Tailwind

colors: {
  custom: {
    50: '#8175cb',
    500: '#3e40b4',
    950: '#000000',
  },
}

SCSS

$custom: #3e40b4;
$custom-light: #8175cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40b4",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 238.983,
    "s": 48.76,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44534,
    "c": 0.17914,
    "h": 275.6
  },
  "luminance": 0.07986
}

Semantic roles & 50–950 ramp

primary

#3E40B4

secondary

#C5C489

accent

#D64FD8

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #3E40B4

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

Preview Lab → · Contrast checker → · Palette generator →