#3737C0#3737C0

#3737C0 is a dark, highly saturated blue. Relative luminance 0.073; OKLCH L 43.8% C 0.206 H 273.8°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3737C0
RGB	rgb(55, 55, 192)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 75%)
CMYK	cmyk(71.4%, 71.4%, 0%, 24.7%)
CIE-LAB	lab(32.59, 44.51, -71.16)
CIE-LCH	lch(32.59, 83.94, 302.03°)
OKLab	oklab(43.76% 0.0137 -0.2058)
OKLCH	oklch(43.76% 0.206 273.8)
XYZ	xyz(12.4530, 7.3492, 50.6212)
Luminance	0.0735 (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

#3737C0 #C0C037

analogous

#377BC0 #3737C0 #7B37C0

triadic

#3737C0 #C03737 #37C037

tetradic

#3737C0 #C0377B #C0C037 #37C07B

square

#3737C0 #C0377B #C0C037 #37C07B

split-complementary

#3737C0 #C07B37 #7BC037

monochromatic

#1C1C61 #292990 #3737C0 #6262D2 #9292E0

Accessibility & contrast

On white

8.50

#3737C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3737C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737C0

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737C0	#FFFFFF	#000000	##FFFFFF
##3737C0	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C4

Deuteranopia (green-blind)

#0046BE

Tritanopia (blue-blind)

#005D78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3737c0;
/* rgb */ color: rgb(55, 55, 192);
/* oklch */ color: oklch(43.8% 0.206 273.8);

Tailwind

colors: {
  custom: {
    50: '#826fd4',
    500: '#3737c0',
    950: '#000000',
  },
}

SCSS

$custom: #3737c0;
$custom-light: #826fd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3737c0",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 192
  },
  "hsl": {
    "h": 240,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43763,
    "c": 0.20625,
    "h": 273.8
  },
  "luminance": 0.0735
}

Semantic roles & 50–950 ramp

primary

#3737C0

secondary

#CBCB88

accent

#DF49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3737C0

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

Preview Lab → · Contrast checker → · Palette generator →