#3E40BA#3E40BA

#3E40BA is a mid, vivid blue. Relative luminance 0.082; OKLCH L 45.1% C 0.187 H 275.2°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#3E40BA
RGB	rgb(62, 64, 186)
HSL	hsl(239, 50%, 49%)
HSV	hsv(239, 67%, 73%)
CMYK	cmyk(66.7%, 65.6%, 0%, 27.1%)
CIE-LAB	lab(34.47, 37.95, -64.53)
CIE-LCH	lch(34.47, 74.86, 300.46°)
OKLab	oklab(45.07% 0.0169 -0.1862)
OKLCH	oklch(45.07% 0.187 275.2)
XYZ	xyz(12.6800, 8.2350, 47.3661)
Luminance	0.0824 (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

#3E40BA #BAB83E

analogous

#3E7EBA #3E40BA #7A3EBA

triadic

#3E40BA #BA3E40 #40BA3E

tetradic

#3E40BA #BA3E7E #BAB83E #3EBA7A

square

#3E40BA #BA3E7E #BAB83E #3EBA7A

split-complementary

#3E40BA #BA7A3E #7EBA3E

monochromatic

#1F205E #2F308C #3E40BA #686ACD #9697DC

Accessibility & contrast

On white

7.93

#3E40BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#3E40BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40BA

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40BA	#FFFFFF	#000000	##FFFFFF
##3E40BA	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BE

Deuteranopia (green-blind)

#004BB8

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3e40ba;
/* rgb */ color: rgb(62, 64, 186);
/* oklch */ color: oklch(45.1% 0.187 275.2);

Tailwind

colors: {
  custom: {
    50: '#8375d0',
    500: '#3e40ba',
    950: '#000000',
  },
}

SCSS

$custom: #3e40ba;
$custom-light: #8375d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40ba",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 186
  },
  "hsl": {
    "h": 239.032,
    "s": 50,
    "l": 48.627
  },
  "oklch": {
    "l": 0.45069,
    "c": 0.18698,
    "h": 275.2
  },
  "luminance": 0.08236
}

Semantic roles & 50–950 ramp

primary

#3E40BA

secondary

#C8C78C

accent

#D74EDA

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3E40BA

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

Preview Lab → · Contrast checker → · Palette generator →