#3740C6#3740C6

#3740C6 is a mid, highly saturated blue. Relative luminance 0.086; OKLCH L 45.8% C 0.204 H 272.2°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#3740C6
RGB	rgb(55, 64, 198)
HSL	hsl(236, 57%, 50%)
HSV	hsv(236, 72%, 78%)
CMYK	cmyk(72.2%, 67.7%, 0%, 22.4%)
CIE-LAB	lab(35.11, 41.20, -70.53)
CIE-LCH	lch(35.11, 81.68, 300.29°)
OKLab	oklab(45.75% 0.0078 -0.2039)
OKLCH	oklch(45.75% 0.204 272.2)
XYZ	xyz(13.5986, 8.5549, 54.3497)
Luminance	0.0856 (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

#3740C6 #C6BD37

analogous

#3787C6 #3740C6 #7637C6

triadic

#3740C6 #C63740 #40C637

tetradic

#3740C6 #C63787 #C6BD37 #37C676

square

#3740C6 #C63787 #C6BD37 #37C676

split-complementary

#3740C6 #C67637 #87C637

monochromatic

#1C2166 #2A3196 #3740C6 #666DD4 #969AE2

Accessibility & contrast

On white

7.75

#3740C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3740C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3740C6

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3740C6	#FFFFFF	#000000	##FFFFFF
##3740C6	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059CA

Deuteranopia (green-blind)

#004CC4

Tritanopia (blue-blind)

#00647E

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3740c6;
/* rgb */ color: rgb(55, 64, 198);
/* oklch */ color: oklch(45.8% 0.204 272.2);

Tailwind

colors: {
  custom: {
    50: '#8275d8',
    500: '#3740c6',
    950: '#000000',
  },
}

SCSS

$custom: #3740c6;
$custom-light: #8275d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3740c6",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 198
  },
  "hsl": {
    "h": 236.224,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.45753,
    "c": 0.20408,
    "h": 272.2
  },
  "luminance": 0.08556
}

Semantic roles & 50–950 ramp

primary

#3740C6

secondary

#CDC98C

accent

#D648E0

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0C0815

muted

#7D7B83

Preview Lab

Preview with #3740C6

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

Preview Lab → · Contrast checker → · Palette generator →