#3749AD#3749AD

#3749AD is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.2% C 0.160 H 270.8°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#3749AD
RGB	rgb(55, 73, 173)
HSL	hsl(231, 52%, 45%)
HSV	hsv(231, 68%, 68%)
CMYK	cmyk(68.2%, 57.8%, 0%, 32.2%)
CIE-LAB	lab(35.19, 26.64, -55.67)
CIE-LCH	lch(35.19, 61.72, 295.58°)
OKLab	oklab(45.16% 0.0023 -0.1603)
OKLCH	oklch(45.16% 0.16 270.8)
XYZ	xyz(11.4984, 8.5934, 40.5798)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749AD #AD9B37

analogous

#3784AD #3749AD #6037AD

triadic

#3749AD #AD3749 #49AD37

tetradic

#3749AD #AD3784 #AD9B37 #37AD60

square

#3749AD #AD3784 #AD9B37 #37AD60

split-complementary

#3749AD #AD6037 #84AD37

monochromatic

#192250 #28357F #3749AD #5769CA #8693D8

Accessibility & contrast

On white

7.72

#3749AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#3749AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749AD

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749AD	#FFFFFF	#000000	##FFFFFF
##3749AD	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B0

Deuteranopia (green-blind)

#004EAB

Tritanopia (blue-blind)

#006174

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3749ad;
/* rgb */ color: rgb(55, 73, 173);
/* oklch */ color: oklch(45.2% 0.160 270.8);

Tailwind

colors: {
  custom: {
    50: '#7c7bc6',
    500: '#3749ad',
    950: '#000000',
  },
}

SCSS

$custom: #3749ad;
$custom-light: #7c7bc6;
$custom-dark: #000000;

JSON

{
  "hex": "#3749ad",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 173
  },
  "hsl": {
    "h": 230.847,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.45157,
    "c": 0.16033,
    "h": 270.8
  },
  "luminance": 0.08594
}

Semantic roles & 50–950 ramp

primary

#3749AD

secondary

#C2B87D

accent

#C54DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3749AD

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

Preview Lab → · Contrast checker → · Palette generator →