#3734B5#3734B5

#3734B5 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 42.2% C 0.196 H 275.0°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#3734B5
RGB	rgb(55, 52, 181)
HSL	hsl(241, 55%, 46%)
HSV	hsv(241, 71%, 71%)
CMYK	cmyk(69.6%, 71.3%, 0%, 29%)
CIE-LAB	lab(30.89, 42.60, -67.47)
CIE-LCH	lch(30.89, 79.79, 302.27°)
OKLab	oklab(42.22% 0.0172 -0.195)
OKLCH	oklch(42.22% 0.196 275)
XYZ	xyz(11.1413, 6.6034, 44.3945)
Luminance	0.0660 (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

#3734B5 #B2B534

analogous

#3472B5 #3734B5 #7734B5

triadic

#3734B5 #B53734 #34B537

tetradic

#3734B5 #B53472 #B2B534 #34B577

square

#3734B5 #B53472 #B2B534 #34B577

split-complementary

#3734B5 #B57734 #72B534

monochromatic

#1A1956 #292685 #3734B5 #5A57CF #8987DC

Accessibility & contrast

On white

9.05

#3734B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3734B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734B5

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734B5	#FFFFFF	#000000	##FFFFFF
##3734B5	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB9

Deuteranopia (green-blind)

#0043B3

Tritanopia (blue-blind)

#005871

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3734b5;
/* rgb */ color: rgb(55, 52, 181);
/* oklch */ color: oklch(42.2% 0.196 275.0);

Tailwind

colors: {
  custom: {
    50: '#806dcc',
    500: '#3734b5',
    950: '#000000',
  },
}

SCSS

$custom: #3734b5;
$custom-light: #806dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3734b5",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 181
  },
  "hsl": {
    "h": 241.395,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.42221,
    "c": 0.19575,
    "h": 275
  },
  "luminance": 0.06604
}

Semantic roles & 50–950 ramp

primary

#3734B5

secondary

#C5C67F

accent

#DF49DB

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3734B5

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

Preview Lab → · Contrast checker → · Palette generator →