#3746B9#3746B9

#3746B9 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.6% C 0.180 H 271.5°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX	#3746B9
RGB	rgb(55, 70, 185)
HSL	hsl(233, 54%, 47%)
HSV	hsv(233, 70%, 73%)
CMYK	cmyk(70.3%, 62.2%, 0%, 27.5%)
CIE-LAB	lab(35.39, 32.90, -62.45)
CIE-LCH	lch(35.39, 70.59, 297.78°)
OKLab	oklab(45.61% 0.0047 -0.1802)
OKLCH	oklch(45.61% 0.18 271.5)
XYZ	xyz(12.5197, 8.6941, 46.9079)
Luminance	0.0869 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.57

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3746B9 #B9AA37

analogous

#3787B9 #3746B9 #6937B9

triadic

#3746B9 #B93746 #46B937

tetradic

#3746B9 #B93787 #B9AA37 #37B969

square

#3746B9 #B93787 #B9AA37 #37B969

split-complementary

#3746B9 #B96937 #87B937

monochromatic

#1B225B #29348A #3746B9 #5E6BCF #8D96DD

Accessibility & contrast

On white

7.67

#3746B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3746B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3746B9

7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3746B9	#FFFFFF	#000000	##FFFFFF
##3746B9	1.00	7.67	2.74	7.67
#FFFFFF	7.67	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BD

Deuteranopia (green-blind)

#004DB7

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3746b9;
/* rgb */ color: rgb(55, 70, 185);
/* oklch */ color: oklch(45.6% 0.180 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f79cf',
    500: '#3746b9',
    950: '#000000',
  },
}

SCSS

$custom: #3746b9;
$custom-light: #7f79cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3746b9",
  "rgb": {
    "r": 55,
    "g": 70,
    "b": 185
  },
  "hsl": {
    "h": 233.077,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45605,
    "c": 0.18031,
    "h": 271.5
  },
  "luminance": 0.08695
}

Semantic roles & 50–950 ramp

primary

#3746B9

secondary

#C8C084

accent

#CD4ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3746B9

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

Preview Lab → · Contrast checker → · Palette generator →