#3757AD#3757AD

#3757AD is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.142 H 265.9°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3757AD
RGB	rgb(55, 87, 173)
HSL	hsl(224, 52%, 45%)
HSV	hsv(224, 68%, 68%)
CMYK	cmyk(68.2%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(38.98, 17.47, -49.55)
CIE-LCH	lch(38.98, 52.54, 289.42°)
OKLab	oklab(48.01% -0.0102 -0.1421)
OKLCH	oklch(48.01% 0.142 265.9)
XYZ	xyz(12.5239, 10.6445, 40.9216)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757AD #AD8D37

analogous

#3792AD #3757AD #5237AD

triadic

#3757AD #AD3757 #57AD37

tetradic

#3757AD #AD3792 #AD8D37 #37AD52

square

#3757AD #AD3792 #AD8D37 #37AD52

split-complementary

#3757AD #AD5237 #92AD37

monochromatic

#192850 #28407F #3757AD #5776CA #869CD8

Accessibility & contrast

On white

6.71

#3757AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3757AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757AD

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757AD	#FFFFFF	#000000	##FFFFFF
##3757AD	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2761B0

Deuteranopia (green-blind)

#0357AB

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3757ad;
/* rgb */ color: rgb(55, 87, 173);
/* oklch */ color: oklch(48.0% 0.142 265.9);

Tailwind

colors: {
  custom: {
    50: '#7b85c6',
    500: '#3757ad',
    950: '#000000',
  },
}

SCSS

$custom: #3757ad;
$custom-light: #7b85c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3757ad",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 223.729,
    "s": 51.754,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48013,
    "c": 0.14246,
    "h": 265.9
  },
  "luminance": 0.10646
}

Semantic roles & 50–950 ramp

primary

#3757AD

secondary

#C2B07D

accent

#B54DDB

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3757AD

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

Preview Lab → · Contrast checker → · Palette generator →