#3753BF#3753BF

#3753BF is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.6% C 0.172 H 268.2°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3753BF
RGB	rgb(55, 83, 191)
HSL	hsl(228, 55%, 48%)
HSV	hsv(228, 71%, 75%)
CMYK	cmyk(71.2%, 56.5%, 0%, 25.1%)
CIE-LAB	lab(39.17, 26.69, -59.81)
CIE-LCH	lch(39.17, 65.49, 294.05°)
OKLab	oklab(48.57% -0.0053 -0.1723)
OKLCH	oklch(48.57% 0.172 268.2)
XYZ	xyz(14.0695, 10.7589, 50.6153)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753BF #BFA337

analogous

#3797BF #3753BF #5F37BF

triadic

#3753BF #BF3753 #53BF37

tetradic

#3753BF #BF3797 #BFA337 #37BF5F

square

#3753BF #BF3797 #BFA337 #37BF5F

split-complementary

#3753BF #BF5F37 #97BF37

monochromatic

#1C2A60 #293E8F #3753BF #6279D2 #91A1DF

Accessibility & contrast

On white

6.66

#3753BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3753BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753BF

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753BF	#FFFFFF	#000000	##FFFFFF
##3753BF	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C3

Deuteranopia (green-blind)

#0056BD

Tritanopia (blue-blind)

#006D81

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3753bf;
/* rgb */ color: rgb(55, 83, 191);
/* oklch */ color: oklch(48.6% 0.172 268.2);

Tailwind

colors: {
  custom: {
    50: '#7f83d3',
    500: '#3753bf',
    950: '#000000',
  },
}

SCSS

$custom: #3753bf;
$custom-light: #7f83d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3753bf",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 191
  },
  "hsl": {
    "h": 227.647,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.48566,
    "c": 0.17242,
    "h": 268.2
  },
  "luminance": 0.1076
}

Semantic roles & 50–950 ramp

primary

#3753BF

secondary

#CABC88

accent

#C049DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3753BF

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

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