#3579AB#3579AB

#3579AB is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.5% C 0.104 H 243.6°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3579AB
RGB	rgb(53, 121, 171)
HSL	hsl(205, 53%, 44%)
HSV	hsv(205, 69%, 67%)
CMYK	cmyk(69%, 29.2%, 0%, 32.9%)
CIE-LAB	lab(48.72, -4.91, -32.89)
CIE-LCH	lch(48.72, 33.25, 261.51°)
OKLab	oklab(55.53% -0.0461 -0.0929)
OKLCH	oklch(55.53% 0.104 243.6)
XYZ	xyz(15.6535, 17.3702, 41.0480)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3579AB #AB6735

analogous

#35ABA2 #3579AB #353EAB

triadic

#3579AB #AB3579 #79AB35

tetradic

#3579AB #A235AB #AB6735 #3EAB35

square

#3579AB #A235AB #AB6735 #3EAB35

split-complementary

#3579AB #AB353E #ABA235

monochromatic

#18374E #27587C #3579AB #5398CA #82B4D8

Accessibility & contrast

On white

4.69

#3579AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3579AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3579AB

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3579AB	#FFFFFF	#000000	##FFFFFF
##3579AB	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#627AAD

Deuteranopia (green-blind)

#526FAA

Tritanopia (blue-blind)

#00858A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3579ab;
/* rgb */ color: rgb(53, 121, 171);
/* oklch */ color: oklch(55.5% 0.104 243.6);

Tailwind

colors: {
  custom: {
    50: '#7a9fc4',
    500: '#3579ab',
    950: '#000000',
  },
}

SCSS

$custom: #3579ab;
$custom-light: #7a9fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3579ab",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 171
  },
  "hsl": {
    "h": 205.424,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.55531,
    "c": 0.1037,
    "h": 243.6
  },
  "luminance": 0.17372
}

Semantic roles & 50–950 ramp

primary

#3579AB

secondary

#C2987A

accent

#894CDC

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3579AB

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

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