#3742A2#3742A2

#3742A2 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.9% C 0.154 H 273.1°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#3742A2
RGB	rgb(55, 66, 162)
HSL	hsl(234, 49%, 43%)
HSV	hsv(234, 66%, 64%)
CMYK	cmyk(66%, 59.3%, 0%, 36.5%)
CIE-LAB	lab(32.52, 27.26, -53.43)
CIE-LCH	lch(32.52, 59.98, 297.03°)
OKLab	oklab(42.9% 0.0083 -0.1538)
OKLCH	oklch(42.9% 0.154 273.1)
XYZ	xyz(10.0432, 7.3164, 35.0584)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3742A2 #A29737

analogous

#3777A2 #3742A2 #6237A2

triadic

#3742A2 #A23742 #42A237

tetradic

#3742A2 #A23777 #A29737 #37A262

square

#3742A2 #A23777 #A29737 #37A262

split-complementary

#3742A2 #A26237 #77A237

monochromatic

#181D47 #272F74 #3742A2 #525EC4 #8088D4

Accessibility & contrast

On white

8.52

#3742A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3742A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3742A2

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3742A2	#FFFFFF	#000000	##FFFFFF
##3742A2	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A5

Deuteranopia (green-blind)

#0048A0

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3742a2;
/* rgb */ color: rgb(55, 66, 162);
/* oklch */ color: oklch(42.9% 0.154 273.1);

Tailwind

colors: {
  custom: {
    50: '#7a76be',
    500: '#3742a2',
    950: '#000000',
  },
}

SCSS

$custom: #3742a2;
$custom-light: #7a76be;
$custom-dark: #000000;

JSON

{
  "hex": "#3742a2",
  "rgb": {
    "r": 55,
    "g": 66,
    "b": 162
  },
  "hsl": {
    "h": 233.832,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42898,
    "c": 0.15402,
    "h": 273.1
  },
  "luminance": 0.07317
}

Semantic roles & 50–950 ramp

primary

#3742A2

secondary

#BDB678

accent

#CB4FD9

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3742A2

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

Preview Lab → · Contrast checker → · Palette generator →