#3750B2#3750B2

#3750B2 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 46.9% C 0.158 H 268.7°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#3750B2
RGB	rgb(55, 80, 178)
HSL	hsl(228, 53%, 46%)
HSV	hsv(228, 69%, 70%)
CMYK	cmyk(69.1%, 55.1%, 0%, 30.2%)
CIE-LAB	lab(37.41, 23.89, -55.03)
CIE-LCH	lch(37.41, 59.99, 293.47°)
OKLab	oklab(46.94% -0.0035 -0.1583)
OKLCH	oklch(46.94% 0.158 268.7)
XYZ	xyz(12.4773, 9.7627, 43.3377)
Luminance	0.0976 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750B2 #B29937

analogous

#378DB2 #3750B2 #5B37B2

triadic

#3750B2 #B23750 #50B237

tetradic

#3750B2 #B2378D #B29937 #37B25B

square

#3750B2 #B2378D #B29937 #37B25B

split-complementary

#3750B2 #B25B37 #8DB237

monochromatic

#1A2654 #293B83 #3750B2 #5A71CC #8999DB

Accessibility & contrast

On white

7.11

#3750B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3750B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3750B2

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750B2	#FFFFFF	#000000	##FFFFFF
##3750B2	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB5

Deuteranopia (green-blind)

#0053B0

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3750b2;
/* rgb */ color: rgb(55, 80, 178);
/* oklch */ color: oklch(46.9% 0.158 268.7);

Tailwind

colors: {
  custom: {
    50: '#7d80ca',
    500: '#3750b2',
    950: '#000000',
  },
}

SCSS

$custom: #3750b2;
$custom-light: #7d80ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3750b2",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 178
  },
  "hsl": {
    "h": 227.805,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.46941,
    "c": 0.15836,
    "h": 268.7
  },
  "luminance": 0.09764
}

Semantic roles & 50–950 ramp

primary

#3750B2

secondary

#C5B780

accent

#BF4CDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3750B2

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

Preview Lab → · Contrast checker → · Palette generator →