#3756B5#3756B5

#3756B5 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.4% C 0.155 H 266.9°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3756B5
RGB	rgb(55, 86, 181)
HSL	hsl(225, 53%, 46%)
HSV	hsv(225, 70%, 71%)
CMYK	cmyk(69.6%, 52.5%, 0%, 29%)
CIE-LAB	lab(39.25, 21.07, -53.83)
CIE-LCH	lch(39.25, 57.80, 291.37°)
OKLab	oklab(48.39% -0.0084 -0.1547)
OKLCH	oklch(48.39% 0.155 266.9)
XYZ	xyz(13.2409, 10.8027, 45.0944)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B5 #B59637

analogous

#3795B5 #3756B5 #5737B5

triadic

#3756B5 #B53756 #56B537

tetradic

#3756B5 #B53795 #B59637 #37B557

square

#3756B5 #B53795 #B59637 #37B557

split-complementary

#3756B5 #B55737 #95B537

monochromatic

#1A2957 #294086 #3756B5 #5C78CD #8B9FDC

Accessibility & contrast

On white

6.64

#3756B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3756B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B5

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B5	#FFFFFF	#000000	##FFFFFF
##3756B5	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1862B8

Deuteranopia (green-blind)

#0057B3

Tritanopia (blue-blind)

#006D7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3756b5;
/* rgb */ color: rgb(55, 86, 181);
/* oklch */ color: oklch(48.4% 0.155 266.9);

Tailwind

colors: {
  custom: {
    50: '#7d85cc',
    500: '#3756b5',
    950: '#000000',
  },
}

SCSS

$custom: #3756b5;
$custom-light: #7d85cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b5",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 181
  },
  "hsl": {
    "h": 225.238,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.48393,
    "c": 0.15493,
    "h": 266.9
  },
  "luminance": 0.10804
}

Semantic roles & 50–950 ramp

primary

#3756B5

secondary

#C6B582

accent

#B94BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3756B5

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

Preview Lab → · Contrast checker → · Palette generator →