#3579A4#3579A4

#3579A4 is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.2% C 0.096 H 239.6°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3579A4
RGB	rgb(53, 121, 164)
HSL	hsl(203, 51%, 43%)
HSV	hsv(203, 68%, 64%)
CMYK	cmyk(67.7%, 26.2%, 0%, 35.7%)
CIE-LAB	lab(48.40, -7.36, -29.32)
CIE-LCH	lch(48.40, 30.23, 255.91°)
OKLab	oklab(55.17% -0.0485 -0.0825)
OKLCH	oklch(55.17% 0.096 239.6)
XYZ	xyz(15.0038, 17.1104, 37.6267)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579A4 #A46035

analogous

#35A497 #3579A4 #3542A4

triadic

#3579A4 #A43579 #79A435

tetradic

#3579A4 #9735A4 #A46035 #42A435

square

#3579A4 #9735A4 #A46035 #42A435

split-complementary

#3579A4 #A43542 #A49735

monochromatic

#173547 #265776 #3579A4 #5098C6 #7EB4D5

Accessibility & contrast

On white

4.75

#3579A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3579A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3579A4

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579A4	#FFFFFF	#000000	##FFFFFF
##3579A4	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6579A6

Deuteranopia (green-blind)

#566EA3

Tritanopia (blue-blind)

#008488

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3579a4;
/* rgb */ color: rgb(53, 121, 164);
/* oklch */ color: oklch(55.2% 0.096 239.6);

Tailwind

colors: {
  custom: {
    50: '#799fbf',
    500: '#3579a4',
    950: '#000000',
  },
}

SCSS

$custom: #3579a4;
$custom-light: #799fbf;
$custom-dark: #000000;

JSON

{
  "hex": "#3579a4",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 164
  },
  "hsl": {
    "h": 203.243,
    "s": 51.152,
    "l": 42.549
  },
  "oklch": {
    "l": 0.55168,
    "c": 0.09569,
    "h": 239.6
  },
  "luminance": 0.17112
}

Semantic roles & 50–950 ramp

primary

#3579A4

secondary

#BE9276

accent

#844DDB

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3579A4

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

Preview Lab → · Contrast checker → · Palette generator →