#3748AF#3748AF

#3748AF is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.1% C 0.164 H 271.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#3748AF
RGB	rgb(55, 72, 175)
HSL	hsl(232, 52%, 45%)
HSV	hsv(232, 69%, 69%)
CMYK	cmyk(68.6%, 58.9%, 0%, 31.4%)
CIE-LAB	lab(35.09, 28.02, -57.03)
CIE-LCH	lch(35.09, 63.54, 296.17°)
OKLab	oklab(45.13% 0.0032 -0.1643)
OKLCH	oklch(45.13% 0.164 271.1)
XYZ	xyz(11.6282, 8.5410, 41.5849)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3748AF #AF9E37

analogous

#3784AF #3748AF #6237AF

triadic

#3748AF #AF3748 #48AF37

tetradic

#3748AF #AF3784 #AF9E37 #37AF62

square

#3748AF #AF3784 #AF9E37 #37AF62

split-complementary

#3748AF #AF6237 #84AF37

monochromatic

#1A2252 #283580 #3748AF #5969CB #8793D9

Accessibility & contrast

On white

7.75

#3748AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3748AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748AF

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748AF	#FFFFFF	#000000	##FFFFFF
##3748AF	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	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: #3748af;
/* rgb */ color: rgb(55, 72, 175);
/* oklch */ color: oklch(45.1% 0.164 271.1);

Tailwind

colors: {
  custom: {
    50: '#7d7ac8',
    500: '#3748af',
    950: '#000000',
  },
}

SCSS

$custom: #3748af;
$custom-light: #7d7ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#3748af",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 175
  },
  "hsl": {
    "h": 231.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.45128,
    "c": 0.16434,
    "h": 271.1
  },
  "luminance": 0.08542
}

Semantic roles & 50–950 ramp

primary

#3748AF

secondary

#C3BA7F

accent

#C74CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3748AF

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

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