#3752BB#3752BB

#3752BB is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.168 H 268.4°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3752BB
RGB	rgb(55, 82, 187)
HSL	hsl(228, 55%, 47%)
HSV	hsv(228, 71%, 73%)
CMYK	cmyk(70.6%, 56.1%, 0%, 26.7%)
CIE-LAB	lab(38.61, 25.87, -58.38)
CIE-LCH	lch(38.61, 63.86, 293.90°)
OKLab	oklab(48.05% -0.0046 -0.1682)
OKLCH	oklch(48.05% 0.168 268.4)
XYZ	xyz(13.5594, 10.4333, 48.3033)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3752BB #BBA037

analogous

#3794BB #3752BB #5E37BB

triadic

#3752BB #BB3752 #52BB37

tetradic

#3752BB #BB3794 #BBA037 #37BB5E

square

#3752BB #BB3794 #BBA037 #37BB5E

split-complementary

#3752BB #BB5E37 #94BB37

monochromatic

#1B295C #293D8C #3752BB #5F76D0 #8E9FDE

Accessibility & contrast

On white

6.80

#3752BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3752BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3752BB

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3752BB	#FFFFFF	#000000	##FFFFFF
##3752BB	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3752bb;
/* rgb */ color: rgb(55, 82, 187);
/* oklch */ color: oklch(48.0% 0.168 268.4);

Tailwind

colors: {
  custom: {
    50: '#7f82d0',
    500: '#3752bb',
    950: '#000000',
  },
}

SCSS

$custom: #3752bb;
$custom-light: #7f82d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3752bb",
  "rgb": {
    "r": 55,
    "g": 82,
    "b": 187
  },
  "hsl": {
    "h": 227.727,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4805,
    "c": 0.16822,
    "h": 268.4
  },
  "luminance": 0.10435
}

Semantic roles & 50–950 ramp

primary

#3752BB

secondary

#C9BB85

accent

#C04ADE

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3752BB

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

Preview Lab → · Contrast checker → · Palette generator →