#3579BF#3579BF

#3579BF is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.6% C 0.128 H 251.7°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3579BF
RGB	rgb(53, 121, 191)
HSL	hsl(210, 57%, 48%)
HSV	hsv(210, 72%, 75%)
CMYK	cmyk(72.3%, 36.6%, 0%, 25.1%)
CIE-LAB	lab(49.73, 2.25, -42.87)
CIE-LCH	lch(49.73, 42.92, 273.01°)
OKLab	oklab(56.65% -0.0404 -0.122)
OKLCH	oklch(56.65% 0.128 251.7)
XYZ	xyz(17.7060, 18.1913, 51.8582)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579BF #BF7B35

analogous

#35BEBF #3579BF #3635BF

triadic

#3579BF #BF3579 #79BF35

tetradic

#3579BF #BF35BE #BF7B35 #35BF36

square

#3579BF #BF35BE #BF7B35 #35BF36

split-complementary

#3579BF #BF3635 #BEBF35

monochromatic

#1A3C5F #285B8F #3579BF #5F98D3 #8FB7E0

Accessibility & contrast

On white

4.53

#3579BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#3579BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579BF

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579BF	#FFFFFF	#000000	##000000
##3579BF	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597DC2

Deuteranopia (green-blind)

#4570BE

Tritanopia (blue-blind)

#008993

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3579bf;
/* rgb */ color: rgb(53, 121, 191);
/* oklch */ color: oklch(56.6% 0.128 251.7);

Tailwind

colors: {
  custom: {
    50: '#7d9fd2',
    500: '#3579bf',
    950: '#000000',
  },
}

SCSS

$custom: #3579bf;
$custom-light: #7d9fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3579bf",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 191
  },
  "hsl": {
    "h": 210.435,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5665,
    "c": 0.12846,
    "h": 251.7
  },
  "luminance": 0.18193
}

Semantic roles & 50–950 ramp

primary

#3579BF

secondary

#CAA885

accent

#9548E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3579BF

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

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