#3759D1#3759D1

#3759D1 is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.2% C 0.189 H 267.2°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#3759D1
RGB	rgb(55, 89, 209)
HSL	hsl(227, 63%, 52%)
HSV	hsv(227, 74%, 82%)
CMYK	cmyk(73.7%, 57.4%, 0%, 18%)
CIE-LAB	lab(42.09, 29.39, -65.49)
CIE-LCH	lch(42.09, 71.78, 294.17°)
OKLab	oklab(51.18% -0.0091 -0.1889)
OKLCH	oklch(51.18% 0.189 267.2)
XYZ	xyz(16.6525, 12.5586, 61.8557)
Luminance	0.1256 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759D1 #D1AF37

analogous

#37A6D1 #3759D1 #6237D1

triadic

#3759D1 #D13759 #59D137

tetradic

#3759D1 #D137A6 #D1AF37 #37D162

square

#3759D1 #D137A6 #D1AF37 #37D162

split-complementary

#3759D1 #D16237 #A6D137

monochromatic

#1A2E73 #2642A5 #3759D1 #6982DC #9BACE8

Accessibility & contrast

On white

5.98

#3759D1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#3759D1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759D1

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759D1	#FFFFFF	#000000	##FFFFFF
##3759D1	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD5

Deuteranopia (green-blind)

#005CCF

Tritanopia (blue-blind)

#00778C

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3759d1;
/* rgb */ color: rgb(55, 89, 209);
/* oklch */ color: oklch(51.2% 0.189 267.2);

Tailwind

colors: {
  custom: {
    50: '#8387e0',
    500: '#3759d1',
    950: '#000000',
  },
}

SCSS

$custom: #3759d1;
$custom-light: #8387e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3759d1",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 209
  },
  "hsl": {
    "h": 226.753,
    "s": 62.602,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51182,
    "c": 0.18916,
    "h": 267.2
  },
  "luminance": 0.1256
}

Semantic roles & 50–950 ramp

primary

#3759D1

secondary

#D4C590

accent

#C242E6

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3759D1

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

Preview Lab → · Contrast checker → · Palette generator →