#3E40D8#3E40D8

#3E40D8 is a mid, highly saturated blue. Relative luminance 0.096; OKLCH L 47.9% C 0.225 H 273.4°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#3E40D8
RGB	rgb(62, 64, 216)
HSL	hsl(239, 66%, 55%)
HSV	hsv(239, 71%, 85%)
CMYK	cmyk(71.3%, 70.4%, 0%, 15.3%)
CIE-LAB	lab(37.20, 47.97, -77.50)
CIE-LCH	lch(37.20, 91.14, 301.75°)
OKLab	oklab(47.88% 0.0133 -0.2241)
OKLCH	oklch(47.88% 0.225 273.4)
XYZ	xyz(16.2105, 9.6472, 65.9602)
Luminance	0.0965 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue (survey)

#0343DF

ΔE00 3.21

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E40D8 #D8D63E

analogous

#3E8DD8 #3E40D8 #893ED8

triadic

#3E40D8 #D83E40 #40D83E

tetradic

#3E40D8 #D83E8D #D8D63E #3ED889

square

#3E40D8 #D83E8D #D8D63E #3ED889

split-complementary

#3E40D8 #D8893E #8DD83E

monochromatic

#1A1B81 #2426B4 #3E40D8 #7172E2 #A4A5ED

Accessibility & contrast

On white

7.17

#3E40D8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3E40D8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40D8

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40D8	#FFFFFF	#000000	##FFFFFF
##3E40D8	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FDD

Deuteranopia (green-blind)

#0050D5

Tritanopia (blue-blind)

#006A88

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3e40d8;
/* rgb */ color: rgb(62, 64, 216);
/* oklch */ color: oklch(47.9% 0.225 273.4);

Tailwind

colors: {
  custom: {
    50: '#8976e5',
    500: '#3e40d8',
    950: '#000000',
  },
}

SCSS

$custom: #3e40d8;
$custom-light: #8976e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40d8",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 216
  },
  "hsl": {
    "h": 239.221,
    "s": 66.379,
    "l": 54.51
  },
  "oklch": {
    "l": 0.47876,
    "c": 0.22453,
    "h": 273.4
  },
  "luminance": 0.09649
}

Semantic roles & 50–950 ramp

primary

#3E40D8

secondary

#D9D998

accent

#E73EE9

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #3E40D8

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

Preview Lab → · Contrast checker → · Palette generator →