#3753CC#3753CC

#3753CC is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.6% C 0.190 H 268.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3753CC
RGB	rgb(55, 83, 204)
HSL	hsl(229, 59%, 51%)
HSV	hsv(229, 73%, 80%)
CMYK	cmyk(73%, 59.3%, 0%, 20%)
CIE-LAB	lab(40.17, 31.41, -65.73)
CIE-LCH	lch(40.17, 72.85, 295.55°)
OKLab	oklab(49.63% -0.005 -0.1897)
OKLCH	oklch(49.63% 0.19 268.5)
XYZ	xyz(15.5641, 11.3567, 58.4868)
Luminance	0.1136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753CC #CCB037

analogous

#379DCC #3753CC #6537CC

triadic

#3753CC #CC3753 #53CC37

tetradic

#3753CC #CC379D #CCB037 #37CC65

square

#3753CC #CC379D #CCB037 #37CC65

split-complementary

#3753CC #CC6537 #9DCC37

monochromatic

#1C2B6D #283E9E #3753CC #687DD8 #99A7E5

Accessibility & contrast

On white

6.42

#3753CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3753CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753CC

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753CC	#FFFFFF	#000000	##FFFFFF
##3753CC	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D0

Deuteranopia (green-blind)

#0058CA

Tritanopia (blue-blind)

#007187

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3753cc;
/* rgb */ color: rgb(55, 83, 204);
/* oklch */ color: oklch(49.6% 0.190 268.5);

Tailwind

colors: {
  custom: {
    50: '#8283dc',
    500: '#3753cc',
    950: '#000000',
  },
}

SCSS

$custom: #3753cc;
$custom-light: #8283dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3753cc",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 204
  },
  "hsl": {
    "h": 228.725,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.4963,
    "c": 0.18978,
    "h": 268.5
  },
  "luminance": 0.11358
}

Semantic roles & 50–950 ramp

primary

#3753CC

secondary

#D0C48E

accent

#C545E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3753CC

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

Preview Lab → · Contrast checker → · Palette generator →