#3759D4#3759D4

#3759D4 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.4% C 0.193 H 267.3°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#3759D4
RGB	rgb(55, 89, 212)
HSL	hsl(227, 65%, 52%)
HSV	hsv(227, 74%, 83%)
CMYK	cmyk(74.1%, 58%, 0%, 16.9%)
CIE-LAB	lab(42.32, 30.48, -66.83)
CIE-LCH	lch(42.32, 73.46, 294.52°)
OKLab	oklab(51.43% -0.009 -0.1929)
OKLCH	oklch(51.43% 0.193 267.3)
XYZ	xyz(17.0275, 12.7086, 63.8302)
Luminance	0.1271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3759D4 #D4B237

analogous

#37A8D4 #3759D4 #6337D4

triadic

#3759D4 #D43759 #59D437

tetradic

#3759D4 #D437A8 #D4B237 #37D463

square

#3759D4 #D437A8 #D4B237 #37D463

split-complementary

#3759D4 #D46337 #A8D437

monochromatic

#1A2E77 #2441A9 #3759D4 #6983DF #9CADEA

Accessibility & contrast

On white

5.93

#3759D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#3759D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3759D4

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3759D4	#FFFFFF	#000000	##FFFFFF
##3759D4	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BD8

Deuteranopia (green-blind)

#005DD2

Tritanopia (blue-blind)

#00788E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #3759d4;
/* rgb */ color: rgb(55, 89, 212);
/* oklch */ color: oklch(51.4% 0.193 267.3);

Tailwind

colors: {
  custom: {
    50: '#8487e2',
    500: '#3759d4',
    950: '#000000',
  },
}

SCSS

$custom: #3759d4;
$custom-light: #8487e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3759d4",
  "rgb": {
    "r": 55,
    "g": 89,
    "b": 212
  },
  "hsl": {
    "h": 227.006,
    "s": 64.609,
    "l": 52.353
  },
  "oklch": {
    "l": 0.51426,
    "c": 0.19311,
    "h": 267.3
  },
  "luminance": 0.1271
}

Semantic roles & 50–950 ramp

primary

#3759D4

secondary

#D6C791

accent

#C340E8

background

#F8F8FE

surface

#F0EFFC

border

#CBCAD5

text

#0C0B15

muted

#7D7C84

Preview Lab

Preview with #3759D4

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

Preview Lab → · Contrast checker → · Palette generator →