#3758BA#3758BA

#3758BA is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.2% C 0.159 H 266.5°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#3758BA
RGB	rgb(55, 88, 186)
HSL	hsl(225, 54%, 47%)
HSV	hsv(225, 70%, 73%)
CMYK	cmyk(70.4%, 52.7%, 0%, 27.1%)
CIE-LAB	lab(40.14, 21.61, -55.32)
CIE-LCH	lch(40.14, 59.38, 291.33°)
OKLab	oklab(49.18% -0.0097 -0.159)
OKLCH	oklch(49.18% 0.159 266.5)
XYZ	xyz(13.9251, 11.3354, 47.8989)
Luminance	0.1134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758BA #BA9937

analogous

#379ABA #3758BA #5737BA

triadic

#3758BA #BA3758 #58BA37

tetradic

#3758BA #BA379A #BA9937 #37BA57

square

#3758BA #BA379A #BA9937 #37BA57

split-complementary

#3758BA #BA5737 #9ABA37

monochromatic

#1B2B5C #29428B #3758BA #5F7BD0 #8EA2DE

Accessibility & contrast

On white

6.43

#3758BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3758BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758BA

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758BA	#FFFFFF	#000000	##FFFFFF
##3758BA	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1665BD

Deuteranopia (green-blind)

#0059B8

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3758ba;
/* rgb */ color: rgb(55, 88, 186);
/* oklch */ color: oklch(49.2% 0.159 266.5);

Tailwind

colors: {
  custom: {
    50: '#7e86cf',
    500: '#3758ba',
    950: '#000000',
  },
}

SCSS

$custom: #3758ba;
$custom-light: #7e86cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3758ba",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 186
  },
  "hsl": {
    "h": 224.885,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.49181,
    "c": 0.15935,
    "h": 266.5
  },
  "luminance": 0.11337
}

Semantic roles & 50–950 ramp

primary

#3758BA

secondary

#C8B785

accent

#B94ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3758BA

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

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