#3737C6#3737C6

#3737C6 is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.4% C 0.214 H 273.4°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#3737C6
RGB	rgb(55, 55, 198)
HSL	hsl(240, 57%, 50%)
HSV	hsv(240, 72%, 78%)
CMYK	cmyk(72.2%, 72.2%, 0%, 22.4%)
CIE-LAB	lab(33.18, 46.50, -73.71)
CIE-LCH	lch(33.18, 87.15, 302.25°)
OKLab	oklab(44.36% 0.0128 -0.2132)
OKLCH	oklch(44.36% 0.214 273.4)
XYZ	xyz(13.1314, 7.6205, 54.1940)
Luminance	0.0762 (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

#3737C6 #C6C637

analogous

#377FC6 #3737C6 #7F37C6

triadic

#3737C6 #C63737 #37C637

tetradic

#3737C6 #C6377F #C6C637 #37C67F

square

#3737C6 #C6377F #C6C637 #37C67F

split-complementary

#3737C6 #C67F37 #7FC637

monochromatic

#1C1C66 #2A2A96 #3737C6 #6666D4 #9696E2

Accessibility & contrast

On white

8.32

#3737C6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3737C6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737C6

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737C6	#FFFFFF	#000000	##FFFFFF
##3737C6	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055CA

Deuteranopia (green-blind)

#0047C3

Tritanopia (blue-blind)

#00607B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3737c6;
/* rgb */ color: rgb(55, 55, 198);
/* oklch */ color: oklch(44.4% 0.214 273.4);

Tailwind

colors: {
  custom: {
    50: '#836fd9',
    500: '#3737c6',
    950: '#000000',
  },
}

SCSS

$custom: #3737c6;
$custom-light: #836fd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3737c6",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 198
  },
  "hsl": {
    "h": 240,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.44362,
    "c": 0.21359,
    "h": 273.4
  },
  "luminance": 0.07622
}

Semantic roles & 50–950 ramp

primary

#3737C6

secondary

#CDCD8C

accent

#E048E0

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3737C6

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

Preview Lab → · Contrast checker → · Palette generator →