#3579BD#3579BD

#3579BD is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.5% C 0.126 H 251.0°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3579BD
RGB	rgb(53, 121, 189)
HSL	hsl(210, 56%, 47%)
HSV	hsv(210, 72%, 74%)
CMYK	cmyk(72%, 36%, 0%, 25.9%)
CIE-LAB	lab(49.62, 1.53, -41.88)
CIE-LCH	lch(49.62, 41.91, 272.09°)
OKLab	oklab(56.53% -0.0409 -0.1191)
OKLCH	oklch(56.53% 0.126 251)
XYZ	xyz(17.4874, 18.1038, 50.7070)
Luminance	0.1811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579BD #BD7935

analogous

#35BDBD #3579BD #3535BD

triadic

#3579BD #BD3579 #79BD35

tetradic

#3579BD #BD35BD #BD7935 #35BD35

square

#3579BD #BD35BD #BD7935 #35BD35

split-complementary

#3579BD #BD3535 #BDBD35

monochromatic

#1A3C5D #285A8D #3579BD #5D98D2 #8DB6DF

Accessibility & contrast

On white

4.54

#3579BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#3579BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579BD

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579BD	#FFFFFF	#000000	##000000
##3579BD	1.00	4.54	4.62	4.62
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7DC0

Deuteranopia (green-blind)

#4670BC

Tritanopia (blue-blind)

#008992

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3579bd;
/* rgb */ color: rgb(53, 121, 189);
/* oklch */ color: oklch(56.5% 0.126 251.0);

Tailwind

colors: {
  custom: {
    50: '#7d9fd1',
    500: '#3579bd',
    950: '#000000',
  },
}

SCSS

$custom: #3579bd;
$custom-light: #7d9fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3579bd",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 189
  },
  "hsl": {
    "h": 210,
    "s": 56.198,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56533,
    "c": 0.12591,
    "h": 251
  },
  "luminance": 0.18106
}

Semantic roles & 50–950 ramp

primary

#3579BD

secondary

#CAA784

accent

#9448DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3579BD

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

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