#3756B9#3756B9

#3756B9 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.160 H 267.1°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#3756B9
RGB	rgb(55, 86, 185)
HSL	hsl(226, 54%, 47%)
HSV	hsv(226, 70%, 73%)
CMYK	cmyk(70.3%, 53.5%, 0%, 27.5%)
CIE-LAB	lab(39.53, 22.54, -55.72)
CIE-LCH	lch(39.53, 60.10, 292.02°)
OKLab	oklab(48.7% -0.0081 -0.1603)
OKLCH	oklch(48.7% 0.16 267.1)
XYZ	xyz(13.6573, 10.9692, 47.2871)
Luminance	0.1097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B9 #B99A37

analogous

#3797B9 #3756B9 #5937B9

triadic

#3756B9 #B93756 #56B937

tetradic

#3756B9 #B93797 #B99A37 #37B959

square

#3756B9 #B93797 #B99A37 #37B959

split-complementary

#3756B9 #B95937 #97B937

monochromatic

#1B2A5B #29408A #3756B9 #5E79CF #8DA0DD

Accessibility & contrast

On white

6.57

#3756B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#3756B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B9

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B9	#FFFFFF	#000000	##FFFFFF
##3756B9	1.00	6.57	3.19	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E63BC

Deuteranopia (green-blind)

#0057B7

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3756b9;
/* rgb */ color: rgb(55, 86, 185);
/* oklch */ color: oklch(48.7% 0.160 267.1);

Tailwind

colors: {
  custom: {
    50: '#7e85cf',
    500: '#3756b9',
    950: '#000000',
  },
}

SCSS

$custom: #3756b9;
$custom-light: #7e85cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b9",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 185
  },
  "hsl": {
    "h": 225.692,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.48696,
    "c": 0.16047,
    "h": 267.1
  },
  "luminance": 0.10971
}

Semantic roles & 50–950 ramp

primary

#3756B9

secondary

#C8B884

accent

#BA4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3756B9

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

Preview Lab → · Contrast checker → · Palette generator →