#3755C7#3755C7

#3755C7 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.6% C 0.181 H 267.9°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3755C7
RGB	rgb(55, 85, 199)
HSL	hsl(228, 57%, 50%)
HSV	hsv(228, 72%, 78%)
CMYK	cmyk(72.4%, 57.3%, 0%, 22%)
CIE-LAB	lab(40.30, 28.31, -62.63)
CIE-LCH	lch(40.30, 68.73, 294.33°)
OKLab	oklab(49.6% -0.0065 -0.1806)
OKLCH	oklch(49.6% 0.181 267.9)
XYZ	xyz(15.1293, 11.4312, 55.4309)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755C7 #C7A937

analogous

#379DC7 #3755C7 #6137C7

triadic

#3755C7 #C73755 #55C737

tetradic

#3755C7 #C7379D #C7A937 #37C761

square

#3755C7 #C7379D #C7A937 #37C761

split-complementary

#3755C7 #C76137 #9DC737

monochromatic

#1C2C67 #2A4197 #3755C7 #667DD5 #96A6E2

Accessibility & contrast

On white

6.39

#3755C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3755C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755C7

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755C7	#FFFFFF	#000000	##FFFFFF
##3755C7	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066CB

Deuteranopia (green-blind)

#0059C5

Tritanopia (blue-blind)

#007186

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3755c7;
/* rgb */ color: rgb(55, 85, 199);
/* oklch */ color: oklch(49.6% 0.181 267.9);

Tailwind

colors: {
  custom: {
    50: '#8184d9',
    500: '#3755c7',
    950: '#000000',
  },
}

SCSS

$custom: #3755c7;
$custom-light: #8184d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3755c7",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 199
  },
  "hsl": {
    "h": 227.5,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.496,
    "c": 0.18073,
    "h": 267.9
  },
  "luminance": 0.11433
}

Semantic roles & 50–950 ramp

primary

#3755C7

secondary

#CDC08C

accent

#C048E0

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3755C7

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

Preview Lab → · Contrast checker → · Palette generator →