#3741AE#3741AE

#3741AE is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.172 H 273.0°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#3741AE
RGB	rgb(55, 65, 174)
HSL	hsl(235, 52%, 45%)
HSV	hsv(235, 68%, 68%)
CMYK	cmyk(68.4%, 62.6%, 0%, 31.8%)
CIE-LAB	lab(33.24, 32.19, -59.44)
CIE-LCH	lch(33.24, 67.60, 298.44°)
OKLab	oklab(43.74% 0.0089 -0.1715)
OKLCH	oklch(43.74% 0.172 273)
XYZ	xyz(11.1033, 7.6478, 40.9272)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.75

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3741AE #AEA437

analogous

#377DAE #3741AE #6937AE

triadic

#3741AE #AE3741 #41AE37

tetradic

#3741AE #AE377D #AEA437 #37AE69

square

#3741AE #AE377D #AEA437 #37AE69

split-complementary

#3741AE #AE6937 #7DAE37

monochromatic

#1A1E51 #28307F #3741AE #5862CA #868DD9

Accessibility & contrast

On white

8.30

#3741AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#3741AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3741AE

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3741AE	#FFFFFF	#000000	##FFFFFF
##3741AE	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B2

Deuteranopia (green-blind)

#0049AC

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3741ae;
/* rgb */ color: rgb(55, 65, 174);
/* oklch */ color: oklch(43.7% 0.172 273.0);

Tailwind

colors: {
  custom: {
    50: '#7d75c7',
    500: '#3741ae',
    950: '#000000',
  },
}

SCSS

$custom: #3741ae;
$custom-light: #7d75c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3741ae",
  "rgb": {
    "r": 55,
    "g": 65,
    "b": 174
  },
  "hsl": {
    "h": 234.958,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43736,
    "c": 0.1717,
    "h": 273
  },
  "luminance": 0.07649
}

Semantic roles & 50–950 ramp

primary

#3741AE

secondary

#C3BD7E

accent

#CF4CDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3741AE

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

Preview Lab → · Contrast checker → · Palette generator →