#3747AF#3747AF

#3747AF is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.9% C 0.166 H 271.4°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#3747AF
RGB	rgb(55, 71, 175)
HSL	hsl(232, 52%, 45%)
HSV	hsv(232, 69%, 69%)
CMYK	cmyk(68.6%, 59.4%, 0%, 31.4%)
CIE-LAB	lab(34.83, 28.67, -57.45)
CIE-LCH	lch(34.83, 64.20, 296.52°)
OKLab	oklab(44.94% 0.004 -0.1655)
OKLCH	oklch(44.94% 0.166 271.4)
XYZ	xyz(11.5640, 8.4128, 41.5635)
Luminance	0.0841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3747AF #AF9F37

analogous

#3783AF #3747AF #6337AF

triadic

#3747AF #AF3747 #47AF37

tetradic

#3747AF #AF3783 #AF9F37 #37AF63

square

#3747AF #AF3783 #AF9F37 #37AF63

split-complementary

#3747AF #AF6337 #83AF37

monochromatic

#1A2152 #283480 #3747AF #5968CB #8792D9

Accessibility & contrast

On white

7.83

#3747AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#3747AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3747AF

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747AF	#FFFFFF	#000000	##FFFFFF
##3747AF	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B2

Deuteranopia (green-blind)

#004DAD

Tritanopia (blue-blind)

#006174

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3747af;
/* rgb */ color: rgb(55, 71, 175);
/* oklch */ color: oklch(44.9% 0.166 271.4);

Tailwind

colors: {
  custom: {
    50: '#7d7ac8',
    500: '#3747af',
    950: '#000000',
  },
}

SCSS

$custom: #3747af;
$custom-light: #7d7ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#3747af",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 175
  },
  "hsl": {
    "h": 232,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.44937,
    "c": 0.1656,
    "h": 271.4
  },
  "luminance": 0.08414
}

Semantic roles & 50–950 ramp

primary

#3747AF

secondary

#C3BA7F

accent

#C84CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3747AF

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

Preview Lab → · Contrast checker → · Palette generator →