#3738BF#3738BF

#3738BF is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.8% C 0.204 H 273.7°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#3738BF
RGB	rgb(55, 56, 191)
HSL	hsl(240, 55%, 48%)
HSV	hsv(240, 71%, 75%)
CMYK	cmyk(71.2%, 70.7%, 0%, 25.1%)
CIE-LAB	lab(32.70, 43.60, -70.39)
CIE-LCH	lch(32.70, 82.80, 301.78°)
OKLab	oklab(43.82% 0.0133 -0.2035)
OKLCH	oklch(43.82% 0.204 273.7)
XYZ	xyz(12.3906, 7.4009, 50.0556)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.62

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3738BF #BFBE37

analogous

#377CBF #3738BF #7A37BF

triadic

#3738BF #BF3738 #38BF37

tetradic

#3738BF #BF377C #BFBE37 #37BF7A

square

#3738BF #BF377C #BFBE37 #37BF7A

split-complementary

#3738BF #BF7A37 #7CBF37

monochromatic

#1C1C60 #292A8F #3738BF #6262D2 #9192DF

Accessibility & contrast

On white

8.47

#3738BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#3738BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738BF

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3738BF	#FFFFFF	#000000	##FFFFFF
##3738BF	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C3

Deuteranopia (green-blind)

#0046BD

Tritanopia (blue-blind)

#005E77

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3738bf;
/* rgb */ color: rgb(55, 56, 191);
/* oklch */ color: oklch(43.8% 0.204 273.7);

Tailwind

colors: {
  custom: {
    50: '#8170d4',
    500: '#3738bf',
    950: '#000000',
  },
}

SCSS

$custom: #3738bf;
$custom-light: #8170d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3738bf",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 191
  },
  "hsl": {
    "h": 239.559,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.43815,
    "c": 0.20396,
    "h": 273.7
  },
  "luminance": 0.07402
}

Semantic roles & 50–950 ramp

primary

#3738BF

secondary

#CACA88

accent

#DE49DF

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3738BF

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

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