#3734BD#3734BD

#3734BD is a dark, highly saturated blue. Relative luminance 0.069; OKLCH L 43.0% C 0.206 H 274.4°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#3734BD
RGB	rgb(55, 52, 189)
HSL	hsl(241, 57%, 47%)
HSV	hsv(241, 72%, 74%)
CMYK	cmyk(70.9%, 72.5%, 0%, 25.9%)
CIE-LAB	lab(31.67, 45.25, -70.91)
CIE-LCH	lch(31.67, 84.11, 302.54°)
OKLab	oklab(43.02% 0.0159 -0.205)
OKLCH	oklch(43.02% 0.206 274.4)
XYZ	xyz(11.9858, 6.9412, 48.8424)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.96

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3734BD #BABD34

analogous

#3475BD #3734BD #7C34BD

triadic

#3734BD #BD3734 #34BD37

tetradic

#3734BD #BD3475 #BABD34 #34BD7C

square

#3734BD #BD3475 #BABD34 #34BD7C

split-complementary

#3734BD #BD7C34 #75BD34

monochromatic

#1B1A5D #29278D #3734BD #5F5CD2 #8E8CDF

Accessibility & contrast

On white

8.79

#3734BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3734BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734BD

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734BD	#FFFFFF	#000000	##FFFFFF
##3734BD	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051C1

Deuteranopia (green-blind)

#0044BB

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3734bd;
/* rgb */ color: rgb(55, 52, 189);
/* oklch */ color: oklch(43.0% 0.206 274.4);

Tailwind

colors: {
  custom: {
    50: '#816dd2',
    500: '#3734bd',
    950: '#000000',
  },
}

SCSS

$custom: #3734bd;
$custom-light: #816dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3734bd",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 189
  },
  "hsl": {
    "h": 241.314,
    "s": 56.846,
    "l": 47.255
  },
  "oklch": {
    "l": 0.43019,
    "c": 0.20564,
    "h": 274.4
  },
  "luminance": 0.06942
}

Semantic roles & 50–950 ramp

primary

#3734BD

secondary

#C8CA83

accent

#E048DD

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3734BD

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

Preview Lab → · Contrast checker → · Palette generator →