#3759B2#3759B2

#3759B2 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 48.8% C 0.147 H 265.5°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#3759B2
RGB	rgb(55, 89, 178)
HSL	hsl(223, 53%, 46%)
HSV	hsv(223, 69%, 70%)
CMYK	cmyk(69.1%, 50%, 0%, 30.2%)
CIE-LAB	lab(39.87, 18.01, -51.06)
CIE-LCH	lch(39.87, 54.14, 289.42°)
OKLab	oklab(48.8% -0.0115 -0.1465)
OKLCH	oklch(48.8% 0.147 265.5)
XYZ	xyz(13.1810, 11.1700, 43.5722)
Luminance	0.1117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759B2 #B29037

analogous

#3796B2 #3759B2 #5337B2

triadic

#3759B2 #B23759 #59B237

tetradic

#3759B2 #B23796 #B29037 #37B253

square

#3759B2 #B23796 #B29037 #37B253

split-complementary

#3759B2 #B25337 #96B237

monochromatic

#1A2A54 #294283 #3759B2 #5A7ACC #899FDB

Accessibility & contrast

On white

6.49

#3759B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#3759B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759B2

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759B2	#FFFFFF	#000000	##FFFFFF
##3759B2	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2664B5

Deuteranopia (green-blind)

#0059B0

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3759b2;
/* rgb */ color: rgb(55, 89, 178);
/* oklch */ color: oklch(48.8% 0.147 265.5);

Tailwind

colors: {
  custom: {
    50: '#7c87ca',
    500: '#3759b2',
    950: '#000000',
  },
}

SCSS

$custom: #3759b2;
$custom-light: #7c87ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3759b2",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 178
  },
  "hsl": {
    "h": 223.415,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.48798,
    "c": 0.14697,
    "h": 265.5
  },
  "luminance": 0.11171
}

Semantic roles & 50–950 ramp

primary

#3759B2

secondary

#C5B280

accent

#B44CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3759B2

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

Preview Lab → · Contrast checker → · Palette generator →