#3578D3#3578D3

#3578D3 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.7% C 0.156 H 257.0°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3578D3
RGB	rgb(53, 120, 211)
HSL	hsl(215, 64%, 52%)
HSV	hsv(215, 75%, 83%)
CMYK	cmyk(74.9%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(50.56, 10.20, -52.96)
CIE-LCH	lch(50.56, 53.93, 280.90°)
OKLab	oklab(57.66% -0.0349 -0.1516)
OKLCH	oklch(57.66% 0.156 257)
XYZ	xyz(19.9382, 18.8907, 64.2108)
Luminance	0.1889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578D3 #D39035

analogous

#35C7D3 #3578D3 #4135D3

triadic

#3578D3 #D33578 #78D335

tetradic

#3578D3 #D335C7 #D39035 #35D341

square

#3578D3 #D335C7 #D39035 #35D341

split-complementary

#3578D3 #D34135 #C7D335

monochromatic

#194074 #245CA7 #3578D3 #679ADE #9ABBE9

Accessibility & contrast

On white

4.39

#3578D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3578D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578D3

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578D3	#FFFFFF	#000000	##000000
##3578D3	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B80D7

Deuteranopia (green-blind)

#2D72D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3578d3;
/* rgb */ color: rgb(53, 120, 211);
/* oklch */ color: oklch(57.7% 0.156 257.0);

Tailwind

colors: {
  custom: {
    50: '#819ee1',
    500: '#3578d3',
    950: '#000000',
  },
}

SCSS

$custom: #3578d3;
$custom-light: #819ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#3578d3",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 214.557,
    "s": 64.228,
    "l": 51.765
  },
  "oklch": {
    "l": 0.57661,
    "c": 0.15557,
    "h": 257
  },
  "luminance": 0.18893
}

Semantic roles & 50–950 ramp

primary

#3578D3

secondary

#D5B78F

accent

#A141E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3578D3

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

Preview Lab → · Contrast checker → · Palette generator →