#3756B7#3756B7

#3756B7 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.158 H 267.0°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#3756B7
RGB	rgb(55, 86, 183)
HSL	hsl(225, 54%, 47%)
HSV	hsv(225, 70%, 72%)
CMYK	cmyk(69.9%, 53%, 0%, 28.2%)
CIE-LAB	lab(39.39, 21.80, -54.78)
CIE-LCH	lch(39.39, 58.96, 291.70°)
OKLab	oklab(48.54% -0.0083 -0.1575)
OKLCH	oklch(48.54% 0.158 267)
XYZ	xyz(13.4476, 10.8853, 46.1829)
Luminance	0.1089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B7 #B79837

analogous

#3796B7 #3756B7 #5837B7

triadic

#3756B7 #B73756 #56B737

tetradic

#3756B7 #B73796 #B79837 #37B758

square

#3756B7 #B73796 #B79837 #37B758

split-complementary

#3756B7 #B75837 #96B737

monochromatic

#1B2A59 #294088 #3756B7 #5D78CE #8C9FDC

Accessibility & contrast

On white

6.61

#3756B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#3756B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B7

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B7	#FFFFFF	#000000	##FFFFFF
##3756B7	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1463BA

Deuteranopia (green-blind)

#0057B5

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3756b7;
/* rgb */ color: rgb(55, 86, 183);
/* oklch */ color: oklch(48.5% 0.158 267.0);

Tailwind

colors: {
  custom: {
    50: '#7d85cd',
    500: '#3756b7',
    950: '#000000',
  },
}

SCSS

$custom: #3756b7;
$custom-light: #7d85cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b7",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 183
  },
  "hsl": {
    "h": 225.469,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48544,
    "c": 0.15771,
    "h": 267
  },
  "luminance": 0.10887
}

Semantic roles & 50–950 ramp

primary

#3756B7

secondary

#C7B683

accent

#BA4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3756B7

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

Preview Lab → · Contrast checker → · Palette generator →