#3757BE#3757BE

#3757BE is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.3% C 0.166 H 267.0°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3757BE
RGB	rgb(55, 87, 190)
HSL	hsl(226, 55%, 48%)
HSV	hsv(226, 71%, 75%)
CMYK	cmyk(71.1%, 54.2%, 0%, 25.5%)
CIE-LAB	lab(40.16, 23.73, -57.63)
CIE-LCH	lch(40.16, 62.32, 292.38°)
OKLab	oklab(49.28% -0.0086 -0.1659)
OKLCH	oklch(49.28% 0.166 267)
XYZ	xyz(14.2748, 11.3449, 50.1427)
Luminance	0.1135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3757BE #BE9E37

analogous

#379ABE #3757BE #5B37BE

triadic

#3757BE #BE3757 #57BE37

tetradic

#3757BE #BE379A #BE9E37 #37BE5B

square

#3757BE #BE379A #BE9E37 #37BE5B

split-complementary

#3757BE #BE5B37 #9ABE37

monochromatic

#1C2C5F #29418F #3757BE #617CD1 #90A3DF

Accessibility & contrast

On white

6.42

#3757BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3757BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3757BE

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3757BE	#FFFFFF	#000000	##FFFFFF
##3757BE	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0265C2

Deuteranopia (green-blind)

#0059BC

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3757be;
/* rgb */ color: rgb(55, 87, 190);
/* oklch */ color: oklch(49.3% 0.166 267.0);

Tailwind

colors: {
  custom: {
    50: '#7f85d2',
    500: '#3757be',
    950: '#000000',
  },
}

SCSS

$custom: #3757be;
$custom-light: #7f85d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3757be",
  "rgb": {
    "r": 55,
    "g": 87,
    "b": 190
  },
  "hsl": {
    "h": 225.778,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49283,
    "c": 0.16609,
    "h": 267
  },
  "luminance": 0.11346
}

Semantic roles & 50–950 ramp

primary

#3757BE

secondary

#CABA87

accent

#BB49DE

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3757BE

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

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