#3579B8#3579B8

#3579B8 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.2% C 0.120 H 249.3°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3579B8
RGB	rgb(53, 121, 184)
HSL	hsl(209, 55%, 46%)
HSV	hsv(209, 71%, 72%)
CMYK	cmyk(71.2%, 34.2%, 0%, 27.8%)
CIE-LAB	lab(49.36, -0.28, -39.41)
CIE-LCH	lch(49.36, 39.41, 269.60°)
OKLab	oklab(56.25% -0.0422 -0.1119)
OKLCH	oklch(56.25% 0.12 249.3)
XYZ	xyz(16.9540, 17.8905, 47.8978)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579B8 #B87435

analogous

#35B8B6 #3579B8 #3538B8

triadic

#3579B8 #B83579 #79B835

tetradic

#3579B8 #B635B8 #B87435 #38B835

square

#3579B8 #B635B8 #B87435 #38B835

split-complementary

#3579B8 #B83538 #B8B635

monochromatic

#1A3B59 #275A88 #3579B8 #5B97D0 #8AB5DD

Accessibility & contrast

On white

4.59

#3579B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#3579B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B8

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579B8	#FFFFFF	#000000	##FFFFFF
##3579B8	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7CBB

Deuteranopia (green-blind)

#4A70B7

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3579b8;
/* rgb */ color: rgb(53, 121, 184);
/* oklch */ color: oklch(56.2% 0.120 249.3);

Tailwind

colors: {
  custom: {
    50: '#7c9fcd',
    500: '#3579b8',
    950: '#000000',
  },
}

SCSS

$custom: #3579b8;
$custom-light: #7c9fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3579b8",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 184
  },
  "hsl": {
    "h": 208.855,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.56245,
    "c": 0.11957,
    "h": 249.3
  },
  "luminance": 0.17892
}

Semantic roles & 50–950 ramp

primary

#3579B8

secondary

#C7A381

accent

#9149DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3579B8

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

Preview Lab → · Contrast checker → · Palette generator →