#3742C4#3742C4

#3742C4 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.9% C 0.199 H 271.9°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#3742C4
RGB	rgb(55, 66, 196)
HSL	hsl(235, 56%, 49%)
HSV	hsv(235, 72%, 77%)
CMYK	cmyk(71.9%, 66.3%, 0%, 23.1%)
CIE-LAB	lab(35.39, 39.28, -68.91)
CIE-LCH	lch(35.39, 79.32, 299.69°)
OKLab	oklab(45.9% 0.0067 -0.1992)
OKLCH	oklch(45.9% 0.199 271.9)
XYZ	xyz(13.4842, 8.6928, 53.1811)
Luminance	0.0869 (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

#3742C4 #C4B937

analogous

#3789C4 #3742C4 #7337C4

triadic

#3742C4 #C43742 #42C437

tetradic

#3742C4 #C43789 #C4B937 #37C473

square

#3742C4 #C43789 #C4B937 #37C473

split-complementary

#3742C4 #C47337 #89C437

monochromatic

#1C2264 #2A3294 #3742C4 #656DD4 #949AE1

Accessibility & contrast

On white

7.67

#3742C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3742C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3742C4

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3742C4	#FFFFFF	#000000	##FFFFFF
##3742C4	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC8

Deuteranopia (green-blind)

#004DC2

Tritanopia (blue-blind)

#00657D

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3742c4;
/* rgb */ color: rgb(55, 66, 196);
/* oklch */ color: oklch(45.9% 0.199 271.9);

Tailwind

colors: {
  custom: {
    50: '#8277d7',
    500: '#3742c4',
    950: '#000000',
  },
}

SCSS

$custom: #3742c4;
$custom-light: #8277d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3742c4",
  "rgb": {
    "r": 55,
    "g": 66,
    "b": 196
  },
  "hsl": {
    "h": 235.319,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.45896,
    "c": 0.19931,
    "h": 271.9
  },
  "luminance": 0.08694
}

Semantic roles & 50–950 ramp

primary

#3742C4

secondary

#CCC78B

accent

#D448DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3742C4

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

Preview Lab → · Contrast checker → · Palette generator →