#3579B7#3579B7

#3579B7 is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 56.2% C 0.118 H 248.9°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3579B7
RGB	rgb(53, 121, 183)
HSL	hsl(209, 55%, 46%)
HSV	hsv(209, 71%, 72%)
CMYK	cmyk(71%, 33.9%, 0%, 28.2%)
CIE-LAB	lab(49.31, -0.64, -38.92)
CIE-LCH	lch(49.31, 38.92, 269.06°)
OKLab	oklab(56.19% -0.0425 -0.1104)
OKLCH	oklch(56.19% 0.118 248.9)
XYZ	xyz(16.8496, 17.8487, 47.3477)
Luminance	0.1785 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579B7 #B77335

analogous

#35B7B4 #3579B7 #3538B7

triadic

#3579B7 #B73579 #79B735

tetradic

#3579B7 #B435B7 #B77335 #38B735

square

#3579B7 #B435B7 #B77335 #38B735

split-complementary

#3579B7 #B73538 #B7B435

monochromatic

#1A3A58 #275A88 #3579B7 #5A97CF #89B5DD

Accessibility & contrast

On white

4.59

#3579B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.57

#3579B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B7

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579B7	#FFFFFF	#000000	##FFFFFF
##3579B7	1.00	4.59	4.57	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.57	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7CBA

Deuteranopia (green-blind)

#4B70B6

Tritanopia (blue-blind)

#00888F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3579b7;
/* rgb */ color: rgb(53, 121, 183);
/* oklch */ color: oklch(56.2% 0.118 248.9);

Tailwind

colors: {
  custom: {
    50: '#7c9fcd',
    500: '#3579b7',
    950: '#000000',
  },
}

SCSS

$custom: #3579b7;
$custom-light: #7c9fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3579b7",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 183
  },
  "hsl": {
    "h": 208.615,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.56188,
    "c": 0.11832,
    "h": 248.9
  },
  "luminance": 0.17851
}

Semantic roles & 50–950 ramp

primary

#3579B7

secondary

#C7A281

accent

#9049DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3579B7

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

Preview Lab → · Contrast checker → · Palette generator →