#3755BD#3755BD

#3755BD is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.8% C 0.167 H 267.6°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#3755BD
RGB	rgb(55, 85, 189)
HSL	hsl(227, 55%, 48%)
HSV	hsv(227, 71%, 74%)
CMYK	cmyk(70.9%, 55%, 0%, 25.9%)
CIE-LAB	lab(39.55, 24.66, -58.02)
CIE-LCH	lch(39.55, 63.05, 293.02°)
OKLab	oklab(48.8% -0.007 -0.1671)
OKLCH	oklch(48.8% 0.167 267.6)
XYZ	xyz(14.0062, 10.9819, 49.5158)
Luminance	0.1098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755BD #BD9F37

analogous

#3798BD #3755BD #5C37BD

triadic

#3755BD #BD3755 #55BD37

tetradic

#3755BD #BD3798 #BD9F37 #37BD5C

square

#3755BD #BD3798 #BD9F37 #37BD5C

split-complementary

#3755BD #BD5C37 #98BD37

monochromatic

#1B2A5E #29408E #3755BD #607AD1 #90A1DF

Accessibility & contrast

On white

6.57

#3755BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3755BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755BD

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755BD	#FFFFFF	#000000	##FFFFFF
##3755BD	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C1

Deuteranopia (green-blind)

#0057BB

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3755bd;
/* rgb */ color: rgb(55, 85, 189);
/* oklch */ color: oklch(48.8% 0.167 267.6);

Tailwind

colors: {
  custom: {
    50: '#7f84d2',
    500: '#3755bd',
    950: '#000000',
  },
}

SCSS

$custom: #3755bd;
$custom-light: #7f84d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3755bd",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 189
  },
  "hsl": {
    "h": 226.567,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.48804,
    "c": 0.16722,
    "h": 267.6
  },
  "luminance": 0.10983
}

Semantic roles & 50–950 ramp

primary

#3755BD

secondary

#C9BA86

accent

#BD4ADE

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3755BD

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

Preview Lab → · Contrast checker → · Palette generator →