#3740C2#3740C2

#3740C2 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.4% C 0.199 H 272.3°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#3740C2
RGB	rgb(55, 64, 194)
HSL	hsl(236, 56%, 49%)
HSV	hsv(236, 72%, 76%)
CMYK	cmyk(71.6%, 67%, 0%, 23.9%)
CIE-LAB	lab(34.75, 39.82, -68.79)
CIE-LCH	lch(34.75, 79.48, 300.07°)
OKLab	oklab(45.38% 0.0082 -0.1988)
OKLCH	oklch(45.38% 0.199 272.3)
XYZ	xyz(13.1433, 8.3727, 51.9519)
Luminance	0.0837 (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

#3740C2 #C2B937

analogous

#3786C2 #3740C2 #7437C2

triadic

#3740C2 #C23740 #40C237

tetradic

#3740C2 #C23786 #C2B937 #37C274

square

#3740C2 #C23786 #C2B937 #37C274

split-complementary

#3740C2 #C27437 #86C237

monochromatic

#1C2163 #293092 #3740C2 #636BD3 #9398E0

Accessibility & contrast

On white

7.85

#3740C2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3740C2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3740C2

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3740C2	#FFFFFF	#000000	##FFFFFF
##3740C2	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C6

Deuteranopia (green-blind)

#004BC0

Tritanopia (blue-blind)

#00637B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3740c2;
/* rgb */ color: rgb(55, 64, 194);
/* oklch */ color: oklch(45.4% 0.199 272.3);

Tailwind

colors: {
  custom: {
    50: '#8175d6',
    500: '#3740c2',
    950: '#000000',
  },
}

SCSS

$custom: #3740c2;
$custom-light: #8175d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3740c2",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 194
  },
  "hsl": {
    "h": 236.115,
    "s": 55.823,
    "l": 48.824
  },
  "oklch": {
    "l": 0.45376,
    "c": 0.19902,
    "h": 272.3
  },
  "luminance": 0.08374
}

Semantic roles & 50–950 ramp

primary

#3740C2

secondary

#CBC789

accent

#D549DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3740C2

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

Preview Lab → · Contrast checker → · Palette generator →