#3738C0#3738C0

#3738C0 is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.9% C 0.205 H 273.7°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#3738C0
RGB	rgb(55, 56, 192)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 75%)
CMYK	cmyk(71.4%, 70.8%, 0%, 24.7%)
CIE-LAB	lab(32.80, 43.93, -70.82)
CIE-LCH	lch(32.80, 83.34, 301.82°)
OKLab	oklab(43.91% 0.0132 -0.2048)
OKLCH	oklch(43.91% 0.205 273.7)
XYZ	xyz(12.5010, 7.4451, 50.6372)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.59

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3738C0 #C0BF37

analogous

#377CC0 #3738C0 #7A37C0

triadic

#3738C0 #C03738 #38C037

tetradic

#3738C0 #C0377C #C0BF37 #37C07A

square

#3738C0 #C0377C #C0BF37 #37C07A

split-complementary

#3738C0 #C07A37 #7CC037

monochromatic

#1C1C61 #292A90 #3738C0 #6263D2 #9292E0

Accessibility & contrast

On white

8.44

#3738C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3738C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738C0

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3738C0	#FFFFFF	#000000	##FFFFFF
##3738C0	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C4

Deuteranopia (green-blind)

#0047BE

Tritanopia (blue-blind)

#005E78

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3738c0;
/* rgb */ color: rgb(55, 56, 192);
/* oklch */ color: oklch(43.9% 0.205 273.7);

Tailwind

colors: {
  custom: {
    50: '#8270d4',
    500: '#3738c0',
    950: '#000000',
  },
}

SCSS

$custom: #3738c0;
$custom-light: #8270d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3738c0",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 192
  },
  "hsl": {
    "h": 239.562,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43914,
    "c": 0.2052,
    "h": 273.7
  },
  "luminance": 0.07446
}

Semantic roles & 50–950 ramp

primary

#3738C0

secondary

#CBCA88

accent

#DE49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3738C0

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

Preview Lab → · Contrast checker → · Palette generator →