#3755BF#3755BF

#3755BF is a mid, vivid blue. Relative luminance 0.111; OKLCH L 49.0% C 0.170 H 267.7°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#3755BF
RGB	rgb(55, 85, 191)
HSL	hsl(227, 55%, 48%)
HSV	hsv(227, 71%, 75%)
CMYK	cmyk(71.2%, 55.5%, 0%, 25.1%)
CIE-LAB	lab(39.70, 25.39, -58.95)
CIE-LCH	lch(39.70, 64.19, 293.30°)
OKLab	oklab(48.96% -0.0069 -0.1698)
OKLCH	oklch(48.96% 0.17 267.7)
XYZ	xyz(14.2248, 11.0694, 50.6670)
Luminance	0.1107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3755BF #BFA137

analogous

#3799BF #3755BF #5D37BF

triadic

#3755BF #BF3755 #55BF37

tetradic

#3755BF #BF3799 #BFA137 #37BF5D

square

#3755BF #BF3799 #BFA137 #37BF5D

split-complementary

#3755BF #BF5D37 #99BF37

monochromatic

#1C2B60 #29408F #3755BF #627AD2 #91A2DF

Accessibility & contrast

On white

6.53

#3755BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3755BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3755BF

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3755BF	#FFFFFF	#000000	##FFFFFF
##3755BF	1.00	6.53	3.21	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0064C3

Deuteranopia (green-blind)

#0058BD

Tritanopia (blue-blind)

#006F81

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3755bf;
/* rgb */ color: rgb(55, 85, 191);
/* oklch */ color: oklch(49.0% 0.170 267.7);

Tailwind

colors: {
  custom: {
    50: '#7f84d3',
    500: '#3755bf',
    950: '#000000',
  },
}

SCSS

$custom: #3755bf;
$custom-light: #7f84d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3755bf",
  "rgb": {
    "r": 55,
    "g": 85,
    "b": 191
  },
  "hsl": {
    "h": 226.765,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.48961,
    "c": 0.16994,
    "h": 267.7
  },
  "luminance": 0.11071
}

Semantic roles & 50–950 ramp

primary

#3755BF

secondary

#CABC88

accent

#BE49DF

background

#F8F8FD

surface

#F0EFFA

border

#CBCAD3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3755BF

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

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