#3742C0#3742C0

#3742C0 is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.5% C 0.194 H 272.1°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#3742C0
RGB	rgb(55, 66, 192)
HSL	hsl(235, 55%, 48%)
HSV	hsv(235, 71%, 75%)
CMYK	cmyk(71.4%, 65.6%, 0%, 24.7%)
CIE-LAB	lab(35.03, 37.89, -67.15)
CIE-LCH	lch(35.03, 77.11, 299.43°)
OKLab	oklab(45.53% 0.0071 -0.1941)
OKLCH	oklch(45.53% 0.194 272.1)
XYZ	xyz(13.0350, 8.5131, 50.8152)
Luminance	0.0851 (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

#3742C0 #C0B537

analogous

#3787C0 #3742C0 #7037C0

triadic

#3742C0 #C03742 #42C037

tetradic

#3742C0 #C03787 #C0B537 #37C070

square

#3742C0 #C03787 #C0B537 #37C070

split-complementary

#3742C0 #C07037 #87C037

monochromatic

#1C2161 #293290 #3742C0 #626BD2 #9298E0

Accessibility & contrast

On white

7.77

#3742C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#3742C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3742C0

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3742C0	#FFFFFF	#000000	##FFFFFF
##3742C0	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C4

Deuteranopia (green-blind)

#004CBE

Tritanopia (blue-blind)

#00637B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3742c0;
/* rgb */ color: rgb(55, 66, 192);
/* oklch */ color: oklch(45.5% 0.194 272.1);

Tailwind

colors: {
  custom: {
    50: '#8176d4',
    500: '#3742c0',
    950: '#000000',
  },
}

SCSS

$custom: #3742c0;
$custom-light: #8176d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3742c0",
  "rgb": {
    "r": 55,
    "g": 66,
    "b": 192
  },
  "hsl": {
    "h": 235.182,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.45527,
    "c": 0.19419,
    "h": 272.1
  },
  "luminance": 0.08514
}

Semantic roles & 50–950 ramp

primary

#3742C0

secondary

#CBC588

accent

#D349DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3742C0

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

Preview Lab → · Contrast checker → · Palette generator →