#3742BE#3742BE

#3742BE is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.3% C 0.192 H 272.2°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#3742BE
RGB	rgb(55, 66, 190)
HSL	hsl(235, 55%, 48%)
HSV	hsv(235, 71%, 75%)
CMYK	cmyk(71.1%, 65.3%, 0%, 25.5%)
CIE-LAB	lab(34.85, 37.19, -66.27)
CIE-LCH	lch(34.85, 75.99, 299.30°)
OKLab	oklab(45.34% 0.0072 -0.1915)
OKLCH	oklch(45.34% 0.192 272.2)
XYZ	xyz(12.8149, 8.4251, 49.6561)
Luminance	0.0843 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3742BE #BEB337

analogous

#3785BE #3742BE #6F37BE

triadic

#3742BE #BE3742 #42BE37

tetradic

#3742BE #BE3785 #BEB337 #37BE6F

square

#3742BE #BE3785 #BEB337 #37BE6F

split-complementary

#3742BE #BE6F37 #85BE37

monochromatic

#1C215F #29328F #3742BE #616AD1 #9097DF

Accessibility & contrast

On white

7.82

#3742BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3742BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3742BE

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3742BE	#FFFFFF	#000000	##FFFFFF
##3742BE	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C2

Deuteranopia (green-blind)

#004CBC

Tritanopia (blue-blind)

#00637A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3742be;
/* rgb */ color: rgb(55, 66, 190);
/* oklch */ color: oklch(45.3% 0.192 272.2);

Tailwind

colors: {
  custom: {
    50: '#8076d3',
    500: '#3742be',
    950: '#000000',
  },
}

SCSS

$custom: #3742be;
$custom-light: #8076d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3742be",
  "rgb": {
    "r": 55,
    "g": 66,
    "b": 190
  },
  "hsl": {
    "h": 235.111,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.45344,
    "c": 0.19161,
    "h": 272.2
  },
  "luminance": 0.08426
}

Semantic roles & 50–950 ramp

primary

#3742BE

secondary

#CAC487

accent

#D249DE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3742BE

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

Preview Lab → · Contrast checker → · Palette generator →