#3745AB#3745AB

#3745AB is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.2% C 0.163 H 272.0°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#3745AB
RGB	rgb(55, 69, 171)
HSL	hsl(233, 51%, 44%)
HSV	hsv(233, 68%, 67%)
CMYK	cmyk(67.8%, 59.6%, 0%, 32.9%)
CIE-LAB	lab(34.00, 28.53, -56.42)
CIE-LCH	lch(34.00, 63.22, 296.83°)
OKLab	oklab(44.22% 0.0057 -0.1625)
OKLCH	oklch(44.22% 0.163 272)
XYZ	xyz(11.0519, 8.0077, 39.4834)
Luminance	0.0801 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3745AB #AB9D37

analogous

#377FAB #3745AB #6337AB

triadic

#3745AB #AB3745 #45AB37

tetradic

#3745AB #AB377F #AB9D37 #37AB63

square

#3745AB #AB377F #AB9D37 #37AB63

split-complementary

#3745AB #AB6337 #7FAB37

monochromatic

#19204E #28327D #3745AB #5664C9 #858FD8

Accessibility & contrast

On white

8.07

#3745AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#3745AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745AB

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3745AB	#FFFFFF	#000000	##FFFFFF
##3745AB	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AE

Deuteranopia (green-blind)

#004BA9

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3745ab;
/* rgb */ color: rgb(55, 69, 171);
/* oklch */ color: oklch(44.2% 0.163 272.0);

Tailwind

colors: {
  custom: {
    50: '#7c78c5',
    500: '#3745ab',
    950: '#000000',
  },
}

SCSS

$custom: #3745ab;
$custom-light: #7c78c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3745ab",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 171
  },
  "hsl": {
    "h": 232.759,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.44222,
    "c": 0.16264,
    "h": 272
  },
  "luminance": 0.08009
}

Semantic roles & 50–950 ramp

primary

#3745AB

secondary

#C1B97C

accent

#CA4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3745AB

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

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