#3741A3#3741A3

#3741A3 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.157 H 273.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#3741A3
RGB	rgb(55, 65, 163)
HSL	hsl(234, 50%, 43%)
HSV	hsv(234, 66%, 64%)
CMYK	cmyk(66.3%, 60.1%, 0%, 36.1%)
CIE-LAB	lab(32.34, 28.27, -54.32)
CIE-LCH	lch(32.34, 61.24, 297.49°)
OKLab	oklab(42.79% 0.0092 -0.1564)
OKLCH	oklch(42.79% 0.157 273.4)
XYZ	xyz(10.0745, 7.2363, 35.5091)
Luminance	0.0724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741A3 #A39937

analogous

#3777A3 #3741A3 #6337A3

triadic

#3741A3 #A33741 #41A337

tetradic

#3741A3 #A33777 #A39937 #37A363

square

#3741A3 #A33777 #A39937 #37A363

split-complementary

#3741A3 #A36337 #77A337

monochromatic

#181D47 #282F75 #3741A3 #525DC5 #8088D4

Accessibility & contrast

On white

8.58

#3741A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#3741A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741A3

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741A3	#FFFFFF	#000000	##FFFFFF
##3741A3	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A6

Deuteranopia (green-blind)

#0047A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3741a3;
/* rgb */ color: rgb(55, 65, 163);
/* oklch */ color: oklch(42.8% 0.157 273.4);

Tailwind

colors: {
  custom: {
    50: '#7b75bf',
    500: '#3741a3',
    950: '#000000',
  },
}

SCSS

$custom: #3741a3;
$custom-light: #7b75bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3741a3",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 163
  },
  "hsl": {
    "h": 234.444,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42791,
    "c": 0.1567,
    "h": 273.4
  },
  "luminance": 0.07237
}

Semantic roles & 50–950 ramp

primary

#3741A3

secondary

#BEB778

accent

#CC4FD9

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3741A3

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

Preview Lab → · Contrast checker → · Palette generator →