#3734B7#3734B7

#3734B7 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.4% C 0.198 H 274.9°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3734B7
RGB	rgb(55, 52, 183)
HSL	hsl(241, 56%, 46%)
HSV	hsv(241, 72%, 72%)
CMYK	cmyk(69.9%, 71.6%, 0%, 28.2%)
CIE-LAB	lab(31.08, 43.27, -68.33)
CIE-LCH	lch(31.08, 80.88, 302.34°)
OKLab	oklab(42.42% 0.0169 -0.1975)
OKLCH	oklch(42.42% 0.198 274.9)
XYZ	xyz(11.3480, 6.6860, 45.4831)
Luminance	0.0669 (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

#3734B7 #B4B734

analogous

#3472B7 #3734B7 #7834B7

triadic

#3734B7 #B73734 #34B737

tetradic

#3734B7 #B73472 #B4B734 #34B778

square

#3734B7 #B73472 #B4B734 #34B778

split-complementary

#3734B7 #B77834 #72B734

monochromatic

#1A1958 #292687 #3734B7 #5B59D0 #8A88DD

Accessibility & contrast

On white

8.98

#3734B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3734B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3734B7

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3734B7	#FFFFFF	#000000	##FFFFFF
##3734B7	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBB

Deuteranopia (green-blind)

#0043B5

Tritanopia (blue-blind)

#005972

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3734b7;
/* rgb */ color: rgb(55, 52, 183);
/* oklch */ color: oklch(42.4% 0.198 274.9);

Tailwind

colors: {
  custom: {
    50: '#806dce',
    500: '#3734b7',
    950: '#000000',
  },
}

SCSS

$custom: #3734b7;
$custom-light: #806dce;
$custom-dark: #000000;

JSON

{
  "hex": "#3734b7",
  "rgb": {
    "r": 55,
    "g": 52,
    "b": 183
  },
  "hsl": {
    "h": 241.374,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42419,
    "c": 0.19824,
    "h": 274.9
  },
  "luminance": 0.06687
}

Semantic roles & 50–950 ramp

primary

#3734B7

secondary

#C6C780

accent

#DF49DC

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3734B7

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

Preview Lab → · Contrast checker → · Palette generator →