#3749AA#3749AA

#3749AA is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.9% C 0.156 H 270.8°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#3749AA
RGB	rgb(55, 73, 170)
HSL	hsl(231, 51%, 44%)
HSV	hsv(231, 68%, 67%)
CMYK	cmyk(67.6%, 57.1%, 0%, 33.3%)
CIE-LAB	lab(34.96, 25.56, -54.26)
CIE-LCH	lch(34.96, 59.97, 295.22°)
OKLab	oklab(44.91% 0.0023 -0.1561)
OKLCH	oklch(44.91% 0.156 270.8)
XYZ	xyz(11.2113, 8.4785, 39.0681)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749AA #AA9837

analogous

#3783AA #3749AA #5F37AA

triadic

#3749AA #AA3749 #49AA37

tetradic

#3749AA #AA3783 #AA9837 #37AA5F

square

#3749AA #AA3783 #AA9837 #37AA5F

split-complementary

#3749AA #AA5F37 #83AA37

monochromatic

#19214E #28357C #3749AA #5668C8 #8491D7

Accessibility & contrast

On white

7.79

#3749AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3749AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749AA

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749AA	#FFFFFF	#000000	##FFFFFF
##3749AA	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058AD

Deuteranopia (green-blind)

#004DA8

Tritanopia (blue-blind)

#006172

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3749aa;
/* rgb */ color: rgb(55, 73, 170);
/* oklch */ color: oklch(44.9% 0.156 270.8);

Tailwind

colors: {
  custom: {
    50: '#7c7bc4',
    500: '#3749aa',
    950: '#000000',
  },
}

SCSS

$custom: #3749aa;
$custom-light: #7c7bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3749aa",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 170
  },
  "hsl": {
    "h": 230.609,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44913,
    "c": 0.15617,
    "h": 270.8
  },
  "luminance": 0.0848
}

Semantic roles & 50–950 ramp

primary

#3749AA

secondary

#C1B67C

accent

#C44DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3749AA

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

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