#3737D0#3737D0

#3737D0 is a mid, highly saturated blue. Relative luminance 0.081; OKLCH L 45.4% C 0.226 H 272.8°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#3737D0
RGB	rgb(55, 55, 208)
HSL	hsl(240, 62%, 52%)
HSV	hsv(240, 74%, 82%)
CMYK	cmyk(73.6%, 73.6%, 0%, 18.4%)
CIE-LAB	lab(34.18, 49.76, -77.87)
CIE-LCH	lch(34.18, 92.41, 302.58°)
OKLab	oklab(45.38% 0.0111 -0.2253)
OKLCH	oklch(45.38% 0.226 272.8)
XYZ	xyz(14.3231, 8.0972, 60.4703)
Luminance	0.0810 (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

#3737D0 #D0D037

analogous

#3784D0 #3737D0 #8437D0

triadic

#3737D0 #D03737 #37D037

tetradic

#3737D0 #D03784 #D0D037 #37D084

square

#3737D0 #D03784 #D0D037 #37D084

split-complementary

#3737D0 #D08437 #84D037

monochromatic

#1B1B72 #2626A3 #3737D0 #6969DC #9A9AE7

Accessibility & contrast

On white

8.02

#3737D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3737D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737D0

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737D0	#FFFFFF	#000000	##FFFFFF
##3737D0	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D4

Deuteranopia (green-blind)

#0049CD

Tritanopia (blue-blind)

#006381

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3737d0;
/* rgb */ color: rgb(55, 55, 208);
/* oklch */ color: oklch(45.4% 0.226 272.8);

Tailwind

colors: {
  custom: {
    50: '#8570e0',
    500: '#3737d0',
    950: '#000000',
  },
}

SCSS

$custom: #3737d0;
$custom-light: #8570e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3737d0",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 208
  },
  "hsl": {
    "h": 240,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.45377,
    "c": 0.22561,
    "h": 272.8
  },
  "luminance": 0.08099
}

Semantic roles & 50–950 ramp

primary

#3737D0

secondary

#D3D390

accent

#E543E5

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3737D0

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

Preview Lab → · Contrast checker → · Palette generator →