#3745AD#3745AD

#3745AD is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.4% C 0.165 H 272.0°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#3745AD
RGB	rgb(55, 69, 173)
HSL	hsl(233, 52%, 45%)
HSV	hsv(233, 68%, 68%)
CMYK	cmyk(68.2%, 60.1%, 0%, 32.2%)
CIE-LAB	lab(34.16, 29.25, -57.35)
CIE-LCH	lch(34.16, 64.38, 297.02°)
OKLab	oklab(44.39% 0.0057 -0.1653)
OKLCH	oklch(44.39% 0.165 272)
XYZ	xyz(11.2440, 8.0845, 40.4950)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3745AD #AD9F37

analogous

#3780AD #3745AD #6437AD

triadic

#3745AD #AD3745 #45AD37

tetradic

#3745AD #AD3780 #AD9F37 #37AD64

square

#3745AD #AD3780 #AD9F37 #37AD64

split-complementary

#3745AD #AD6437 #80AD37

monochromatic

#192050 #28327F #3745AD #5765CA #8690D8

Accessibility & contrast

On white

8.02

#3745AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3745AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745AD

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3745AD	#FFFFFF	#000000	##FFFFFF
##3745AD	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B0

Deuteranopia (green-blind)

#004BAB

Tritanopia (blue-blind)

#005F72

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3745ad;
/* rgb */ color: rgb(55, 69, 173);
/* oklch */ color: oklch(44.4% 0.165 272.0);

Tailwind

colors: {
  custom: {
    50: '#7c78c6',
    500: '#3745ad',
    950: '#000000',
  },
}

SCSS

$custom: #3745ad;
$custom-light: #7c78c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3745ad",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 173
  },
  "hsl": {
    "h": 232.881,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.4439,
    "c": 0.16538,
    "h": 272
  },
  "luminance": 0.08086
}

Semantic roles & 50–950 ramp

primary

#3745AD

secondary

#C2BA7D

accent

#CA4DDB

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3745AD

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

Preview Lab → · Contrast checker → · Palette generator →