#3579B4#3579B4

#3579B4 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 56.0% C 0.115 H 247.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3579B4
RGB	rgb(53, 121, 180)
HSL	hsl(208, 55%, 46%)
HSV	hsv(208, 71%, 71%)
CMYK	cmyk(70.6%, 32.8%, 0%, 29.4%)
CIE-LAB	lab(49.16, -1.71, -37.42)
CIE-LCH	lch(49.16, 37.46, 267.38°)
OKLab	oklab(56.02% -0.0434 -0.106)
OKLCH	oklch(56.02% 0.115 247.7)
XYZ	xyz(16.5407, 17.7251, 45.7207)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579B4 #B47035

analogous

#35B4AF #3579B4 #353AB4

triadic

#3579B4 #B43579 #79B435

tetradic

#3579B4 #AF35B4 #B47035 #3AB435

square

#3579B4 #AF35B4 #B47035 #3AB435

split-complementary

#3579B4 #B4353A #B4AF35

monochromatic

#193955 #275985 #3579B4 #5897CE #88B5DC

Accessibility & contrast

On white

4.62

#3579B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3579B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B4

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579B4	#FFFFFF	#000000	##FFFFFF
##3579B4	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7BB7

Deuteranopia (green-blind)

#4D6FB3

Tritanopia (blue-blind)

#00878E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3579b4;
/* rgb */ color: rgb(53, 121, 180);
/* oklch */ color: oklch(56.0% 0.115 247.7);

Tailwind

colors: {
  custom: {
    50: '#7b9fcb',
    500: '#3579b4',
    950: '#000000',
  },
}

SCSS

$custom: #3579b4;
$custom-light: #7b9fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3579b4",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 180
  },
  "hsl": {
    "h": 207.874,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.5602,
    "c": 0.11458,
    "h": 247.7
  },
  "luminance": 0.17727
}

Semantic roles & 50–950 ramp

primary

#3579B4

secondary

#C6A07F

accent

#8F4ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3579B4

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

Preview Lab → · Contrast checker → · Palette generator →