#3749AF#3749AF

#3749AF is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.3% C 0.163 H 270.8°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#3749AF
RGB	rgb(55, 73, 175)
HSL	hsl(231, 52%, 45%)
HSV	hsv(231, 69%, 69%)
CMYK	cmyk(68.6%, 58.3%, 0%, 31.4%)
CIE-LAB	lab(35.34, 27.37, -56.61)
CIE-LCH	lch(35.34, 62.88, 295.80°)
OKLab	oklab(45.32% 0.0024 -0.1631)
OKLCH	oklch(45.32% 0.163 270.8)
XYZ	xyz(11.6933, 8.6713, 41.6066)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749AF #AF9D37

analogous

#3785AF #3749AF #6137AF

triadic

#3749AF #AF3749 #49AF37

tetradic

#3749AF #AF3785 #AF9D37 #37AF61

square

#3749AF #AF3785 #AF9D37 #37AF61

split-complementary

#3749AF #AF6137 #85AF37

monochromatic

#1A2252 #283680 #3749AF #596ACB #8793D9

Accessibility & contrast

On white

7.68

#3749AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3749AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749AF

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749AF	#FFFFFF	#000000	##FFFFFF
##3749AF	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B2

Deuteranopia (green-blind)

#004EAD

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3749af;
/* rgb */ color: rgb(55, 73, 175);
/* oklch */ color: oklch(45.3% 0.163 270.8);

Tailwind

colors: {
  custom: {
    50: '#7d7bc8',
    500: '#3749af',
    950: '#000000',
  },
}

SCSS

$custom: #3749af;
$custom-light: #7d7bc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3749af",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 175
  },
  "hsl": {
    "h": 231,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.4532,
    "c": 0.16308,
    "h": 270.8
  },
  "luminance": 0.08672
}

Semantic roles & 50–950 ramp

primary

#3749AF

secondary

#C3B97F

accent

#C64CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3749AF

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

Preview Lab → · Contrast checker → · Palette generator →