#3757AE#3757AE

#3757AE is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.144 H 266.0°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#3757AE
RGB	rgb(55, 87, 174)
HSL	hsl(224, 52%, 45%)
HSV	hsv(224, 68%, 68%)
CMYK	cmyk(68.4%, 50%, 0%, 31.8%)
CIE-LAB	lab(39.04, 17.84, -50.03)
CIE-LCH	lch(39.04, 53.12, 289.62°)
OKLab	oklab(48.09% -0.0101 -0.1435)
OKLCH	oklch(48.09% 0.144 266)
XYZ	xyz(12.6211, 10.6834, 41.4332)
Luminance	0.1069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757AE #AE8E37

analogous

#3792AE #3757AE #5337AE

triadic

#3757AE #AE3757 #57AE37

tetradic

#3757AE #AE3792 #AE8E37 #37AE53

square

#3757AE #AE3792 #AE8E37 #37AE53

split-complementary

#3757AE #AE5337 #92AE37

monochromatic

#1A2851 #28407F #3757AE #5877CA #869DD9

Accessibility & contrast

On white

6.69

#3757AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3757AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757AE

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757AE	#FFFFFF	#000000	##FFFFFF
##3757AE	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2662B1

Deuteranopia (green-blind)

#0057AC

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3757ae;
/* rgb */ color: rgb(55, 87, 174);
/* oklch */ color: oklch(48.1% 0.144 266.0);

Tailwind

colors: {
  custom: {
    50: '#7c85c7',
    500: '#3757ae',
    950: '#000000',
  },
}

SCSS

$custom: #3757ae;
$custom-light: #7c85c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3757ae",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 174
  },
  "hsl": {
    "h": 223.866,
    "s": 51.965,
    "l": 44.902
  },
  "oklch": {
    "l": 0.48085,
    "c": 0.14387,
    "h": 266
  },
  "luminance": 0.10685
}

Semantic roles & 50–950 ramp

primary

#3757AE

secondary

#C3B07E

accent

#B54CDB

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3757AE

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

Preview Lab → · Contrast checker → · Palette generator →