#3753B4#3753B4

#3753B4 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.7% C 0.157 H 267.8°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#3753B4
RGB	rgb(55, 83, 180)
HSL	hsl(227, 53%, 46%)
HSV	hsv(227, 69%, 71%)
CMYK	cmyk(69.4%, 53.9%, 0%, 29.4%)
CIE-LAB	lab(38.36, 22.66, -54.67)
CIE-LCH	lch(38.36, 59.18, 292.51°)
OKLab	oklab(47.7% -0.0059 -0.1572)
OKLCH	oklch(47.7% 0.157 267.8)
XYZ	xyz(12.9042, 10.2927, 44.4778)
Luminance	0.1029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753B4 #B49837

analogous

#3791B4 #3753B4 #5937B4

triadic

#3753B4 #B43753 #53B437

tetradic

#3753B4 #B43791 #B49837 #37B459

square

#3753B4 #B43791 #B49837 #37B459

split-complementary

#3753B4 #B45937 #91B437

monochromatic

#1A2856 #293D85 #3753B4 #5B75CD #8A9CDB

Accessibility & contrast

On white

6.87

#3753B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3753B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753B4

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753B4	#FFFFFF	#000000	##FFFFFF
##3753B4	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B60B7

Deuteranopia (green-blind)

#0055B2

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3753b4;
/* rgb */ color: rgb(55, 83, 180);
/* oklch */ color: oklch(47.7% 0.157 267.8);

Tailwind

colors: {
  custom: {
    50: '#7d82cb',
    500: '#3753b4',
    950: '#000000',
  },
}

SCSS

$custom: #3753b4;
$custom-light: #7d82cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3753b4",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 180
  },
  "hsl": {
    "h": 226.56,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.47703,
    "c": 0.15733,
    "h": 267.8
  },
  "luminance": 0.10294
}

Semantic roles & 50–950 ramp

primary

#3753B4

secondary

#C6B681

accent

#BC4BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3753B4

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

Preview Lab → · Contrast checker → · Palette generator →