#3579B5#3579B5

#3579B5 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.1% C 0.116 H 248.2°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3579B5
RGB	rgb(53, 121, 181)
HSL	hsl(208, 55%, 46%)
HSV	hsv(208, 71%, 71%)
CMYK	cmyk(70.7%, 33.1%, 0%, 29%)
CIE-LAB	lab(49.21, -1.36, -37.92)
CIE-LCH	lch(49.21, 37.94, 267.95°)
OKLab	oklab(56.08% -0.0431 -0.1075)
OKLCH	oklch(56.08% 0.116 248.2)
XYZ	xyz(16.6429, 17.7660, 46.2592)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579B5 #B57135

analogous

#35B5B1 #3579B5 #3539B5

triadic

#3579B5 #B53579 #79B535

tetradic

#3579B5 #B135B5 #B57135 #39B535

square

#3579B5 #B135B5 #B57135 #39B535

split-complementary

#3579B5 #B53539 #B5B135

monochromatic

#193A56 #275986 #3579B5 #5997CE #88B5DC

Accessibility & contrast

On white

4.61

#3579B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3579B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B5

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579B5	#FFFFFF	#000000	##FFFFFF
##3579B5	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7CB8

Deuteranopia (green-blind)

#4C6FB4

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3579b5;
/* rgb */ color: rgb(53, 121, 181);
/* oklch */ color: oklch(56.1% 0.116 248.2);

Tailwind

colors: {
  custom: {
    50: '#7c9fcb',
    500: '#3579b5',
    950: '#000000',
  },
}

SCSS

$custom: #3579b5;
$custom-light: #7c9fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3579b5",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 181
  },
  "hsl": {
    "h": 208.125,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.56076,
    "c": 0.11582,
    "h": 248.2
  },
  "luminance": 0.17768
}

Semantic roles & 50–950 ramp

primary

#3579B5

secondary

#C6A180

accent

#8F4ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3579B5

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

Preview Lab → · Contrast checker → · Palette generator →