#3E40BC#3E40BC

#3E40BC is a mid, vivid blue. Relative luminance 0.083; OKLCH L 45.2% C 0.190 H 275.1°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#3E40BC
RGB	rgb(62, 64, 188)
HSL	hsl(239, 50%, 49%)
HSV	hsv(239, 67%, 74%)
CMYK	cmyk(67%, 66%, 0%, 26.3%)
CIE-LAB	lab(34.64, 38.63, -65.42)
CIE-LCH	lch(34.64, 75.98, 300.56°)
OKLab	oklab(45.25% 0.0167 -0.1888)
OKLCH	oklch(45.25% 0.19 275.1)
XYZ	xyz(12.8941, 8.3206, 48.4937)
Luminance	0.0832 (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

#3E40BC #BCBA3E

analogous

#3E7FBC #3E40BC #7B3EBC

triadic

#3E40BC #BC3E40 #40BC3E

tetradic

#3E40BC #BC3E7F #BCBA3E #3EBC7B

square

#3E40BC #BC3E7F #BCBA3E #3EBC7B

split-complementary

#3E40BC #BC7B3E #7FBC3E

monochromatic

#202160 #2F308E #3E40BC #6A6BCE #9899DD

Accessibility & contrast

On white

7.88

#3E40BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3E40BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40BC

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40BC	#FFFFFF	#000000	##FFFFFF
##3E40BC	1.00	7.88	2.66	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3e40bc;
/* rgb */ color: rgb(62, 64, 188);
/* oklch */ color: oklch(45.2% 0.190 275.1);

Tailwind

colors: {
  custom: {
    50: '#8375d1',
    500: '#3e40bc',
    950: '#000000',
  },
}

SCSS

$custom: #3e40bc;
$custom-light: #8375d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40bc",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 188
  },
  "hsl": {
    "h": 239.048,
    "s": 50.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.45249,
    "c": 0.18957,
    "h": 275.1
  },
  "luminance": 0.08322
}

Semantic roles & 50–950 ramp

primary

#3E40BC

secondary

#C9C88D

accent

#D84EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3E40BC

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

Preview Lab → · Contrast checker → · Palette generator →