#3741AD#3741AD

#3741AD is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.6% C 0.170 H 273.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#3741AD
RGB	rgb(55, 65, 173)
HSL	hsl(235, 52%, 45%)
HSV	hsv(235, 68%, 68%)
CMYK	cmyk(68.2%, 62.4%, 0%, 32.2%)
CIE-LAB	lab(33.15, 31.83, -58.98)
CIE-LCH	lch(33.15, 67.03, 298.36°)
OKLab	oklab(43.65% 0.0089 -0.1701)
OKLCH	oklch(43.65% 0.17 273)
XYZ	xyz(11.0061, 7.6089, 40.4157)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741AD #ADA337

analogous

#377CAD #3741AD #6837AD

triadic

#3741AD #AD3741 #41AD37

tetradic

#3741AD #AD377C #ADA337 #37AD68

square

#3741AD #AD377C #ADA337 #37AD68

split-complementary

#3741AD #AD6837 #7CAD37

monochromatic

#191E50 #28307F #3741AD #5761CA #868DD8

Accessibility & contrast

On white

8.33

#3741AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3741AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741AD

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741AD	#FFFFFF	#000000	##FFFFFF
##3741AD	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B1

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3741ad;
/* rgb */ color: rgb(55, 65, 173);
/* oklch */ color: oklch(43.6% 0.170 273.0);

Tailwind

colors: {
  custom: {
    50: '#7d75c6',
    500: '#3741ad',
    950: '#000000',
  },
}

SCSS

$custom: #3741ad;
$custom-light: #7d75c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3741ad",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 173
  },
  "hsl": {
    "h": 234.915,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43648,
    "c": 0.17036,
    "h": 273
  },
  "luminance": 0.0761
}

Semantic roles & 50–950 ramp

primary

#3741AD

secondary

#C2BD7D

accent

#CF4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3741AD

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

Preview Lab → · Contrast checker → · Palette generator →