#3E40A3#3E40A3

#3E40A3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.156 H 276.7°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#3E40A3
RGB	rgb(62, 64, 163)
HSL	hsl(239, 45%, 44%)
HSV	hsv(239, 62%, 64%)
CMYK	cmyk(62%, 60.7%, 0%, 36.1%)
CIE-LAB	lab(32.56, 30.07, -53.95)
CIE-LCH	lch(32.56, 61.76, 299.14°)
OKLab	oklab(43.07% 0.0183 -0.1551)
OKLCH	oklch(43.07% 0.156 276.7)
XYZ	xyz(10.4287, 7.3345, 35.5094)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.28

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E40A3 #A3A13E

analogous

#3E73A3 #3E40A3 #6F3EA3

triadic

#3E40A3 #A33E40 #40A33E

tetradic

#3E40A3 #A33E73 #A3A13E #3EA36F

square

#3E40A3 #A33E73 #A3A13E #3EA36F

split-complementary

#3E40A3 #A36F3E #73A33E

monochromatic

#1C1D4A #2D2F77 #3E40A3 #5D5FC1 #898BD2

Accessibility & contrast

On white

8.51

#3E40A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3E40A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40A3

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40A3	#FFFFFF	#000000	##FFFFFF
##3E40A3	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A6

Deuteranopia (green-blind)

#0048A1

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3e40a3;
/* rgb */ color: rgb(62, 64, 163);
/* oklch */ color: oklch(43.1% 0.156 276.7);

Tailwind

colors: {
  custom: {
    50: '#7e75bf',
    500: '#3e40a3',
    950: '#000000',
  },
}

SCSS

$custom: #3e40a3;
$custom-light: #7e75bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40a3",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 163
  },
  "hsl": {
    "h": 238.812,
    "s": 44.889,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43074,
    "c": 0.15623,
    "h": 276.7
  },
  "luminance": 0.07335
}

Semantic roles & 50–950 ramp

primary

#3E40A3

secondary

#BDBC80

accent

#D253D5

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3E40A3

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

Preview Lab → · Contrast checker → · Palette generator →