#3755B7#3755B7

#3755B7 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.3% C 0.159 H 267.3°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3755B7
RGB	rgb(55, 85, 183)
HSL	hsl(226, 54%, 47%)
HSV	hsv(226, 70%, 72%)
CMYK	cmyk(69.9%, 53.6%, 0%, 28.2%)
CIE-LAB	lab(39.12, 22.45, -55.21)
CIE-LCH	lch(39.12, 59.60, 292.13°)
OKLab	oklab(48.34% -0.0074 -0.1588)
OKLCH	oklch(48.34% 0.159 267.3)
XYZ	xyz(13.3683, 10.7268, 46.1565)
Luminance	0.1073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755B7 #B79937

analogous

#3795B7 #3755B7 #5937B7

triadic

#3755B7 #B73755 #55B737

tetradic

#3755B7 #B73795 #B79937 #37B759

square

#3755B7 #B73795 #B79937 #37B759

split-complementary

#3755B7 #B75937 #95B737

monochromatic

#1B2959 #293F88 #3755B7 #5D77CE #8C9FDC

Accessibility & contrast

On white

6.68

#3755B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3755B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755B7

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755B7	#FFFFFF	#000000	##FFFFFF
##3755B7	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E62BA

Deuteranopia (green-blind)

#0057B5

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3755b7;
/* rgb */ color: rgb(55, 85, 183);
/* oklch */ color: oklch(48.3% 0.159 267.3);

Tailwind

colors: {
  custom: {
    50: '#7e84cd',
    500: '#3755b7',
    950: '#000000',
  },
}

SCSS

$custom: #3755b7;
$custom-light: #7e84cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3755b7",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 183
  },
  "hsl": {
    "h": 225.938,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4834,
    "c": 0.15896,
    "h": 267.3
  },
  "luminance": 0.10728
}

Semantic roles & 50–950 ramp

primary

#3755B7

secondary

#C7B783

accent

#BB4BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3755B7

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

Preview Lab → · Contrast checker → · Palette generator →