#3734BA#3734BA

#3734BA is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.7% C 0.202 H 274.7°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#3734BA
RGB	rgb(55, 52, 186)
HSL	hsl(241, 56%, 47%)
HSV	hsv(241, 72%, 73%)
CMYK	cmyk(70.4%, 72%, 0%, 27.1%)
CIE-LAB	lab(31.38, 44.26, -69.62)
CIE-LCH	lch(31.38, 82.50, 302.44°)
OKLab	oklab(42.72% 0.0164 -0.2013)
OKLCH	oklch(42.72% 0.202 274.7)
XYZ	xyz(11.6635, 6.8123, 47.1451)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.69

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3734BA #B7BA34

analogous

#3474BA #3734BA #7A34BA

triadic

#3734BA #BA3734 #34BA37

tetradic

#3734BA #BA3474 #B7BA34 #34BA7A

square

#3734BA #BA3474 #B7BA34 #34BA7A

split-complementary

#3734BA #BA7A34 #74BA34

monochromatic

#1B195A #29278A #3734BA #5D5AD1 #8C8ADE

Accessibility & contrast

On white

8.89

#3734BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3734BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734BA

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734BA	#FFFFFF	#000000	##FFFFFF
##3734BA	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BE

Deuteranopia (green-blind)

#0044B8

Tritanopia (blue-blind)

#005A74

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3734ba;
/* rgb */ color: rgb(55, 52, 186);
/* oklch */ color: oklch(42.7% 0.202 274.7);

Tailwind

colors: {
  custom: {
    50: '#816dd0',
    500: '#3734ba',
    950: '#000000',
  },
}

SCSS

$custom: #3734ba;
$custom-light: #816dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3734ba",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 186
  },
  "hsl": {
    "h": 241.343,
    "s": 56.303,
    "l": 46.667
  },
  "oklch": {
    "l": 0.42718,
    "c": 0.20196,
    "h": 274.7
  },
  "luminance": 0.06813
}

Semantic roles & 50–950 ramp

primary

#3734BA

secondary

#C7C881

accent

#E048DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3734BA

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

Preview Lab → · Contrast checker → · Palette generator →