#3737C5#3737C5

#3737C5 is a dark, highly saturated blue. Relative luminance 0.076; OKLCH L 44.3% C 0.212 H 273.5°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#3737C5
RGB	rgb(55, 55, 197)
HSL	hsl(240, 56%, 49%)
HSV	hsv(240, 72%, 77%)
CMYK	cmyk(72.1%, 72.1%, 0%, 22.7%)
CIE-LAB	lab(33.08, 46.17, -73.29)
CIE-LCH	lch(33.08, 86.62, 302.21°)
OKLab	oklab(44.26% 0.0129 -0.212)
OKLCH	oklch(44.26% 0.212 273.5)
XYZ	xyz(13.0164, 7.5745, 53.5885)
Luminance	0.0758 (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

#3737C5 #C5C537

analogous

#377EC5 #3737C5 #7E37C5

triadic

#3737C5 #C53737 #37C537

tetradic

#3737C5 #C5377E #C5C537 #37C57E

square

#3737C5 #C5377E #C5C537 #37C57E

split-complementary

#3737C5 #C57E37 #7EC537

monochromatic

#1C1C65 #2A2A95 #3737C5 #6565D4 #9595E1

Accessibility & contrast

On white

8.35

#3737C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3737C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737C5

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737C5	#FFFFFF	#000000	##FFFFFF
##3737C5	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055C9

Deuteranopia (green-blind)

#0047C2

Tritanopia (blue-blind)

#005F7A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3737c5;
/* rgb */ color: rgb(55, 55, 197);
/* oklch */ color: oklch(44.3% 0.212 273.5);

Tailwind

colors: {
  custom: {
    50: '#836fd8',
    500: '#3737c5',
    950: '#000000',
  },
}

SCSS

$custom: #3737c5;
$custom-light: #836fd8;
$custom-dark: #000000;

JSON

{
  "hex": "#3737c5",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 197
  },
  "hsl": {
    "h": 240,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.44262,
    "c": 0.21237,
    "h": 273.5
  },
  "luminance": 0.07576
}

Semantic roles & 50–950 ramp

primary

#3737C5

secondary

#CDCD8B

accent

#E048E0

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0C0715

muted

#7D7A83

Preview Lab

Preview with #3737C5

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

Preview Lab → · Contrast checker → · Palette generator →