#3579D3#3579D3

#3579D3 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.9% C 0.154 H 256.6°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3579D3
RGB	rgb(53, 121, 211)
HSL	hsl(214, 64%, 52%)
HSV	hsv(214, 75%, 83%)
CMYK	cmyk(74.9%, 42.7%, 0%, 17.3%)
CIE-LAB	lab(50.84, 9.58, -52.51)
CIE-LCH	lch(50.84, 53.37, 280.34°)
OKLab	oklab(57.88% -0.0358 -0.1502)
OKLCH	oklch(57.88% 0.154 256.6)
XYZ	xyz(20.0591, 19.1325, 64.2511)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579D3 #D38F35

analogous

#35C8D3 #3579D3 #4035D3

triadic

#3579D3 #D33579 #79D335

tetradic

#3579D3 #D335C8 #D38F35 #35D340

square

#3579D3 #D335C8 #D38F35 #35D340

split-complementary

#3579D3 #D34035 #C8D335

monochromatic

#194074 #245CA7 #3579D3 #679ADE #9ABCE9

Accessibility & contrast

On white

4.35

#3579D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3579D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579D3

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579D3	#FFFFFF	#000000	##000000
##3579D3	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C81D6

Deuteranopia (green-blind)

#3072D1

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3579d3;
/* rgb */ color: rgb(53, 121, 211);
/* oklch */ color: oklch(57.9% 0.154 256.6);

Tailwind

colors: {
  custom: {
    50: '#819fe1',
    500: '#3579d3',
    950: '#000000',
  },
}

SCSS

$custom: #3579d3;
$custom-light: #819fe1;
$custom-dark: #000000;

JSON

{
  "hex": "#3579d3",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 211
  },
  "hsl": {
    "h": 214.177,
    "s": 64.228,
    "l": 51.765
  },
  "oklch": {
    "l": 0.5788,
    "c": 0.15445,
    "h": 256.6
  },
  "luminance": 0.19135
}

Semantic roles & 50–950 ramp

primary

#3579D3

secondary

#D5B78F

accent

#A041E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3579D3

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

Preview Lab → · Contrast checker → · Palette generator →