#3578BC#3578BC

#3578BC is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.126 H 251.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3578BC
RGB	rgb(53, 120, 188)
HSL	hsl(210, 56%, 47%)
HSV	hsv(210, 72%, 74%)
CMYK	cmyk(71.8%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.28, 1.77, -41.86)
CIE-LCH	lch(49.28, 41.89, 272.43°)
OKLab	oklab(56.24% -0.0402 -0.119)
OKLCH	oklch(56.24% 0.126 251.3)
XYZ	xyz(17.2584, 17.8188, 50.0970)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578BC #BC7935

analogous

#35BCBC #3578BC #3535BC

triadic

#3578BC #BC3578 #78BC35

tetradic

#3578BC #BC35BC #BC7935 #35BC35

square

#3578BC #BC35BC #BC7935 #35BC35

split-complementary

#3578BC #BC3535 #BCBC35

monochromatic

#1A3B5D #285A8C #3578BC #5D97D1 #8DB5DF

Accessibility & contrast

On white

4.60

#3578BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3578BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3578BC

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578BC	#FFFFFF	#000000	##FFFFFF
##3578BC	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CBF

Deuteranopia (green-blind)

#456FBB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3578bc;
/* rgb */ color: rgb(53, 120, 188);
/* oklch */ color: oklch(56.2% 0.126 251.3);

Tailwind

colors: {
  custom: {
    50: '#7d9ed0',
    500: '#3578bc',
    950: '#000000',
  },
}

SCSS

$custom: #3578bc;
$custom-light: #7d9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3578bc",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 210.222,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56244,
    "c": 0.12562,
    "h": 251.3
  },
  "luminance": 0.17821
}

Semantic roles & 50–950 ramp

primary

#3578BC

secondary

#C9A784

accent

#9448DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3578BC

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

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