#3753B3#3753B3

#3753B3 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.6% C 0.156 H 267.8°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#3753B3
RGB	rgb(55, 83, 179)
HSL	hsl(226, 53%, 46%)
HSV	hsv(226, 69%, 70%)
CMYK	cmyk(69.3%, 53.6%, 0%, 29.8%)
CIE-LAB	lab(38.29, 22.29, -54.19)
CIE-LCH	lch(38.29, 58.60, 292.36°)
OKLab	oklab(47.63% -0.006 -0.1558)
OKLCH	oklch(47.63% 0.156 267.8)
XYZ	xyz(12.8027, 10.2521, 43.9432)
Luminance	0.1025 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753B3 #B39737

analogous

#3791B3 #3753B3 #5937B3

triadic

#3753B3 #B33753 #53B337

tetradic

#3753B3 #B33791 #B39737 #37B359

square

#3753B3 #B33791 #B39737 #37B359

split-complementary

#3753B3 #B35937 #91B337

monochromatic

#1A2855 #293D84 #3753B3 #5B74CD #8A9CDB

Accessibility & contrast

On white

6.88

#3753B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#3753B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753B3

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753B3	#FFFFFF	#000000	##FFFFFF
##3753B3	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E60B6

Deuteranopia (green-blind)

#0055B1

Tritanopia (blue-blind)

#006A7B

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3753b3;
/* rgb */ color: rgb(55, 83, 179);
/* oklch */ color: oklch(47.6% 0.156 267.8);

Tailwind

colors: {
  custom: {
    50: '#7d82ca',
    500: '#3753b3',
    950: '#000000',
  },
}

SCSS

$custom: #3753b3;
$custom-light: #7d82ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3753b3",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 179
  },
  "hsl": {
    "h": 226.452,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.47626,
    "c": 0.15595,
    "h": 267.8
  },
  "luminance": 0.10253
}

Semantic roles & 50–950 ramp

primary

#3753B3

secondary

#C5B681

accent

#BC4BDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3753B3

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

Preview Lab → · Contrast checker → · Palette generator →