#3748AE#3748AE

#3748AE is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.0% C 0.163 H 271.1°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#3748AE
RGB	rgb(55, 72, 174)
HSL	hsl(231, 52%, 45%)
HSV	hsv(231, 68%, 68%)
CMYK	cmyk(68.4%, 58.6%, 0%, 31.8%)
CIE-LAB	lab(35.01, 27.66, -56.56)
CIE-LCH	lch(35.01, 62.96, 296.06°)
OKLab	oklab(45.05% 0.0032 -0.1629)
OKLCH	oklch(45.05% 0.163 271.1)
XYZ	xyz(11.5303, 8.5019, 41.0696)
Luminance	0.0850 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3748AE #AE9D37

analogous

#3783AE #3748AE #6237AE

triadic

#3748AE #AE3748 #48AE37

tetradic

#3748AE #AE3783 #AE9D37 #37AE62

square

#3748AE #AE3783 #AE9D37 #37AE62

split-complementary

#3748AE #AE6237 #83AE37

monochromatic

#1A2251 #28357F #3748AE #5868CA #8692D9

Accessibility & contrast

On white

7.78

#3748AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3748AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748AE

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748AE	#FFFFFF	#000000	##FFFFFF
##3748AE	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B1

Deuteranopia (green-blind)

#004DAC

Tritanopia (blue-blind)

#006174

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3748ae;
/* rgb */ color: rgb(55, 72, 174);
/* oklch */ color: oklch(45.0% 0.163 271.1);

Tailwind

colors: {
  custom: {
    50: '#7c7ac7',
    500: '#3748ae',
    950: '#000000',
  },
}

SCSS

$custom: #3748ae;
$custom-light: #7c7ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#3748ae",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 174
  },
  "hsl": {
    "h": 231.429,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.45045,
    "c": 0.16297,
    "h": 271.1
  },
  "luminance": 0.08503
}

Semantic roles & 50–950 ramp

primary

#3748AE

secondary

#C3B97E

accent

#C74CDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3748AE

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

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