#3A40A4#3A40A4

#3A40A4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.159 H 274.9°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#3A40A4
RGB	rgb(58, 64, 164)
HSL	hsl(237, 48%, 44%)
HSV	hsv(237, 65%, 64%)
CMYK	cmyk(64.6%, 61%, 0%, 35.7%)
CIE-LAB	lab(32.36, 29.75, -54.88)
CIE-LCH	lch(32.36, 62.43, 298.46°)
OKLab	oklab(42.88% 0.0135 -0.158)
OKLCH	oklch(42.88% 0.159 274.9)
XYZ	xyz(10.2770, 7.2458, 35.9718)
Luminance	0.0725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A40A4 #A49E3A

analogous

#3A75A4 #3A40A4 #693AA4

triadic

#3A40A4 #A43A40 #40A43A

tetradic

#3A40A4 #A43A75 #A49E3A #3AA469

square

#3A40A4 #A43A75 #A49E3A #3AA469

split-complementary

#3A40A4 #A4693A #75A43A

monochromatic

#1A1D4A #2A2E77 #3A40A4 #575EC4 #8589D4

Accessibility & contrast

On white

8.57

#3A40A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3A40A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3A40A4

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A40A4	#FFFFFF	#000000	##FFFFFF
##3A40A4	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3a40a4;
/* rgb */ color: rgb(58, 64, 164);
/* oklch */ color: oklch(42.9% 0.159 274.9);

Tailwind

colors: {
  custom: {
    50: '#7c75c0',
    500: '#3a40a4',
    950: '#000000',
  },
}

SCSS

$custom: #3a40a4;
$custom-light: #7c75c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3a40a4",
  "rgb": {
    "r": 58,
    "g": 64,
    "b": 164
  },
  "hsl": {
    "h": 236.604,
    "s": 47.748,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42883,
    "c": 0.15858,
    "h": 274.9
  },
  "luminance": 0.07247
}

Semantic roles & 50–950 ramp

primary

#3A40A4

secondary

#BEBA7C

accent

#D050D7

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #3A40A4

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

Preview Lab → · Contrast checker → · Palette generator →