#3745AA#3745AA

#3745AA is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.1% C 0.161 H 272.0°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#3745AA
RGB	rgb(55, 69, 170)
HSL	hsl(233, 51%, 44%)
HSV	hsv(233, 68%, 67%)
CMYK	cmyk(67.6%, 59.4%, 0%, 33.3%)
CIE-LAB	lab(33.92, 28.17, -55.95)
CIE-LCH	lch(33.92, 62.64, 296.73°)
OKLab	oklab(44.14% 0.0057 -0.1612)
OKLCH	oklch(44.14% 0.161 272)
XYZ	xyz(10.9569, 7.9697, 38.9833)
Luminance	0.0797 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3745AA #AA9C37

analogous

#377FAA #3745AA #6337AA

triadic

#3745AA #AA3745 #45AA37

tetradic

#3745AA #AA377F #AA9C37 #37AA63

square

#3745AA #AA377F #AA9C37 #37AA63

split-complementary

#3745AA #AA6337 #7FAA37

monochromatic

#191F4E #28327C #3745AA #5664C8 #848ED7

Accessibility & contrast

On white

8.09

#3745AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3745AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745AA

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3745AA	#FFFFFF	#000000	##FFFFFF
##3745AA	1.00	8.09	2.59	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AD

Deuteranopia (green-blind)

#004BA8

Tritanopia (blue-blind)

#005E70

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3745aa;
/* rgb */ color: rgb(55, 69, 170);
/* oklch */ color: oklch(44.1% 0.161 272.0);

Tailwind

colors: {
  custom: {
    50: '#7c78c4',
    500: '#3745aa',
    950: '#000000',
  },
}

SCSS

$custom: #3745aa;
$custom-light: #7c78c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3745aa",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 170
  },
  "hsl": {
    "h": 232.696,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44138,
    "c": 0.16127,
    "h": 272
  },
  "luminance": 0.07971
}

Semantic roles & 50–950 ramp

primary

#3745AA

secondary

#C1B97C

accent

#C94DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3745AA

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

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