#3578C9#3578C9

#3578C9 is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.0% C 0.142 H 254.9°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3578C9
RGB	rgb(53, 120, 201)
HSL	hsl(213, 58%, 50%)
HSV	hsv(213, 74%, 79%)
CMYK	cmyk(73.6%, 40.3%, 0%, 21.2%)
CIE-LAB	lab(49.98, 6.52, -48.19)
CIE-LCH	lch(49.98, 48.63, 277.70°)
OKLab	oklab(57.03% -0.037 -0.1376)
OKLCH	oklch(57.03% 0.142 254.9)
XYZ	xyz(18.7234, 18.4048, 57.8127)
Luminance	0.1841 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578C9 #C98635

analogous

#35C2C9 #3578C9 #3C35C9

triadic

#3578C9 #C93578 #78C935

tetradic

#3578C9 #C935C2 #C98635 #35C93C

square

#3578C9 #C935C2 #C98635 #35C93C

split-complementary

#3578C9 #C93C35 #C2C935

monochromatic

#1B3E68 #285B99 #3578C9 #6598D6 #95B9E3

Accessibility & contrast

On white

4.49

#3578C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#3578C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578C9

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578C9	#FFFFFF	#000000	##000000
##3578C9	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#527ECC

Deuteranopia (green-blind)

#3971C7

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3578c9;
/* rgb */ color: rgb(53, 120, 201);
/* oklch */ color: oklch(57.0% 0.142 254.9);

Tailwind

colors: {
  custom: {
    50: '#7f9eda',
    500: '#3578c9',
    950: '#000000',
  },
}

SCSS

$custom: #3578c9;
$custom-light: #7f9eda;
$custom-dark: #000000;

JSON

{
  "hex": "#3578c9",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 201
  },
  "hsl": {
    "h": 212.838,
    "s": 58.268,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57027,
    "c": 0.14247,
    "h": 254.9
  },
  "luminance": 0.18407
}

Semantic roles & 50–950 ramp

primary

#3578C9

secondary

#CEB08B

accent

#9B46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #3578C9

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

Preview Lab → · Contrast checker → · Palette generator →