#3757AF#3757AF

#3757AF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.2% C 0.145 H 266.1°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3757AF
RGB	rgb(55, 87, 175)
HSL	hsl(224, 52%, 45%)
HSV	hsv(224, 69%, 69%)
CMYK	cmyk(68.6%, 50.3%, 0%, 31.4%)
CIE-LAB	lab(39.11, 18.21, -50.51)
CIE-LCH	lch(39.11, 53.69, 289.82°)
OKLab	oklab(48.16% -0.01 -0.1449)
OKLCH	oklch(48.16% 0.145 266.1)
XYZ	xyz(12.7189, 10.7225, 41.9485)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757AF #AF8F37

analogous

#3793AF #3757AF #5337AF

triadic

#3757AF #AF3757 #57AF37

tetradic

#3757AF #AF3793 #AF8F37 #37AF53

square

#3757AF #AF3793 #AF8F37 #37AF53

split-complementary

#3757AF #AF5337 #93AF37

monochromatic

#1A2952 #284080 #3757AF #5977CB #879DD9

Accessibility & contrast

On white

6.68

#3757AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3757AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757AF

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757AF	#FFFFFF	#000000	##FFFFFF
##3757AF	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2562B2

Deuteranopia (green-blind)

#0057AD

Tritanopia (blue-blind)

#006C7B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3757af;
/* rgb */ color: rgb(55, 87, 175);
/* oklch */ color: oklch(48.2% 0.145 266.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3757af",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 175
  },
  "hsl": {
    "h": 224,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.48158,
    "c": 0.14527,
    "h": 266.1
  },
  "luminance": 0.10724
}

Semantic roles & 50–950 ramp

primary

#3757AF

secondary

#C3B17F

accent

#B54CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3757AF

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

Preview Lab → · Contrast checker → · Palette generator →