#3738BA#3738BA

#3738BA is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.3% C 0.198 H 274.1°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#3738BA
RGB	rgb(55, 56, 186)
HSL	hsl(240, 54%, 47%)
HSV	hsv(240, 70%, 73%)
CMYK	cmyk(70.4%, 69.9%, 0%, 27.1%)
CIE-LAB	lab(32.22, 41.92, -68.23)
CIE-LCH	lch(32.22, 80.08, 301.57°)
OKLab	oklab(43.33% 0.014 -0.1972)
OKLCH	oklch(43.33% 0.198 274.1)
XYZ	xyz(11.8497, 7.1846, 47.2071)
Luminance	0.0719 (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

#3738BA #BAB937

analogous

#377ABA #3738BA #7837BA

triadic

#3738BA #BA3738 #38BA37

tetradic

#3738BA #BA377A #BAB937 #37BA78

square

#3738BA #BA377A #BAB937 #37BA78

split-complementary

#3738BA #BA7837 #7ABA37

monochromatic

#1B1C5C #292A8B #3738BA #5F5FD0 #8E8EDE

Accessibility & contrast

On white

8.62

#3738BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#3738BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738BA

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3738BA	#FFFFFF	#000000	##FFFFFF
##3738BA	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BE

Deuteranopia (green-blind)

#0046B8

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3738ba;
/* rgb */ color: rgb(55, 56, 186);
/* oklch */ color: oklch(43.3% 0.198 274.1);

Tailwind

colors: {
  custom: {
    50: '#806fd0',
    500: '#3738ba',
    950: '#000000',
  },
}

SCSS

$custom: #3738ba;
$custom-light: #806fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3738ba",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 186
  },
  "hsl": {
    "h": 239.542,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43326,
    "c": 0.19773,
    "h": 274.1
  },
  "luminance": 0.07186
}

Semantic roles & 50–950 ramp

primary

#3738BA

secondary

#C8C885

accent

#DD4ADE

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3738BA

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

Preview Lab → · Contrast checker → · Palette generator →