#3579CF#3579CF

#3579CF is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.6% C 0.149 H 255.8°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3579CF
RGB	rgb(53, 121, 207)
HSL	hsl(214, 62%, 51%)
HSV	hsv(214, 74%, 81%)
CMYK	cmyk(74.4%, 41.5%, 0%, 18.8%)
CIE-LAB	lab(50.61, 8.10, -50.61)
CIE-LCH	lch(50.61, 51.25, 279.10°)
OKLab	oklab(57.63% -0.0366 -0.1447)
OKLCH	oklch(57.63% 0.149 255.8)
XYZ	xyz(19.5639, 18.9344, 61.6430)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579CF #CF8B35

analogous

#35C6CF #3579CF #3E35CF

triadic

#3579CF #CF3579 #79CF35

tetradic

#3579CF #CF35C6 #CF8B35 #35CF3E

square

#3579CF #CF35C6 #CF8B35 #35CF3E

split-complementary

#3579CF #CF3E35 #C6CF35

monochromatic

#1A406F #265CA1 #3579CF #669ADB #98BBE7

Accessibility & contrast

On white

4.39

#3579CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#3579CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579CF

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579CF	#FFFFFF	#000000	##000000
##3579CF	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F80D2

Deuteranopia (green-blind)

#3572CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3579cf;
/* rgb */ color: rgb(53, 121, 207);
/* oklch */ color: oklch(57.6% 0.149 255.8);

Tailwind

colors: {
  custom: {
    50: '#809fde',
    500: '#3579cf',
    950: '#000000',
  },
}

SCSS

$custom: #3579cf;
$custom-light: #809fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3579cf",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 207
  },
  "hsl": {
    "h": 213.506,
    "s": 61.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57625,
    "c": 0.14922,
    "h": 255.8
  },
  "luminance": 0.18937
}

Semantic roles & 50–950 ramp

primary

#3579CF

secondary

#D2B48E

accent

#9D43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3579CF

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

Preview Lab → · Contrast checker → · Palette generator →