#3578AB#3578AB

#3578AB is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 55.3% C 0.104 H 244.4°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3578AB
RGB	rgb(53, 120, 171)
HSL	hsl(206, 53%, 44%)
HSV	hsv(206, 69%, 67%)
CMYK	cmyk(69%, 29.8%, 0%, 32.9%)
CIE-LAB	lab(48.42, -4.32, -33.36)
CIE-LCH	lch(48.42, 33.64, 262.63°)
OKLab	oklab(55.29% -0.0451 -0.0942)
OKLCH	oklch(55.29% 0.104 244.4)
XYZ	xyz(15.5326, 17.1284, 41.0077)
Luminance	0.1713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578AB #AB6835

analogous

#35ABA3 #3578AB #353DAB

triadic

#3578AB #AB3578 #78AB35

tetradic

#3578AB #A335AB #AB6835 #3DAB35

square

#3578AB #A335AB #AB6835 #3DAB35

split-complementary

#3578AB #AB353D #ABA335

monochromatic

#18364E #27577C #3578AB #5397CA #82B3D8

Accessibility & contrast

On white

4.74

#3578AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3578AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3578AB

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578AB	#FFFFFF	#000000	##FFFFFF
##3578AB	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6179AD

Deuteranopia (green-blind)

#516EAA

Tritanopia (blue-blind)

#00848A

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3578ab;
/* rgb */ color: rgb(53, 120, 171);
/* oklch */ color: oklch(55.3% 0.104 244.4);

Tailwind

colors: {
  custom: {
    50: '#7a9ec4',
    500: '#3578ab',
    950: '#000000',
  },
}

SCSS

$custom: #3578ab;
$custom-light: #7a9ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3578ab",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 171
  },
  "hsl": {
    "h": 205.932,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.55293,
    "c": 0.10449,
    "h": 244.4
  },
  "luminance": 0.1713
}

Semantic roles & 50–950 ramp

primary

#3578AB

secondary

#C2997A

accent

#8A4CDC

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3578AB

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

Preview Lab → · Contrast checker → · Palette generator →