#3753BC#3753BC

#3753BC is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.3% C 0.168 H 268.2°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3753BC
RGB	rgb(55, 83, 188)
HSL	hsl(227, 55%, 48%)
HSV	hsv(227, 71%, 74%)
CMYK	cmyk(70.7%, 55.9%, 0%, 26.3%)
CIE-LAB	lab(38.95, 25.59, -58.42)
CIE-LCH	lch(38.95, 63.78, 293.66°)
OKLab	oklab(48.33% -0.0054 -0.1682)
OKLCH	oklch(48.33% 0.168 268.2)
XYZ	xyz(13.7428, 10.6282, 48.8944)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753BC #BCA037

analogous

#3796BC #3753BC #5D37BC

triadic

#3753BC #BC3753 #53BC37

tetradic

#3753BC #BC3796 #BCA037 #37BC5D

square

#3753BC #BC3796 #BCA037 #37BC5D

split-complementary

#3753BC #BC5D37 #96BC37

monochromatic

#1B295D #293E8D #3753BC #6077D0 #8FA0DE

Accessibility & contrast

On white

6.72

#3753BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3753BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753BC

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753BC	#FFFFFF	#000000	##FFFFFF
##3753BC	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C0

Deuteranopia (green-blind)

#0056BA

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3753bc;
/* rgb */ color: rgb(55, 83, 188);
/* oklch */ color: oklch(48.3% 0.168 268.2);

Tailwind

colors: {
  custom: {
    50: '#7f83d1',
    500: '#3753bc',
    950: '#000000',
  },
}

SCSS

$custom: #3753bc;
$custom-light: #7f83d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3753bc",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 188
  },
  "hsl": {
    "h": 227.368,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.48327,
    "c": 0.16834,
    "h": 268.2
  },
  "luminance": 0.1063
}

Semantic roles & 50–950 ramp

primary

#3753BC

secondary

#C9BB86

accent

#BF4ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3753BC

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

Preview Lab → · Contrast checker → · Palette generator →