#3577BD#3577BD

#3577BD is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.1% C 0.128 H 252.3°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3577BD
RGB	rgb(53, 119, 189)
HSL	hsl(211, 56%, 47%)
HSV	hsv(211, 72%, 74%)
CMYK	cmyk(72%, 37%, 0%, 25.9%)
CIE-LAB	lab(49.04, 2.75, -42.81)
CIE-LCH	lch(49.04, 42.90, 273.67°)
OKLab	oklab(56.07% -0.039 -0.1218)
OKLCH	oklch(56.07% 0.128 252.3)
XYZ	xyz(17.2469, 17.6228, 50.6268)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577BD #BD7B35

analogous

#35BBBD #3577BD #3735BD

triadic

#3577BD #BD3577 #77BD35

tetradic

#3577BD #BD35BB #BD7B35 #35BD37

square

#3577BD #BD35BB #BD7B35 #35BD37

split-complementary

#3577BD #BD3735 #BBBD35

monochromatic

#1A3B5D #28598D #3577BD #5D96D2 #8DB5DF

Accessibility & contrast

On white

4.64

#3577BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3577BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3577BD

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577BD	#FFFFFF	#000000	##FFFFFF
##3577BD	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#577BC0

Deuteranopia (green-blind)

#436FBC

Tritanopia (blue-blind)

#008791

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3577bd;
/* rgb */ color: rgb(53, 119, 189);
/* oklch */ color: oklch(56.1% 0.128 252.3);

Tailwind

colors: {
  custom: {
    50: '#7d9dd1',
    500: '#3577bd',
    950: '#000000',
  },
}

SCSS

$custom: #3577bd;
$custom-light: #7d9dd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3577bd",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 189
  },
  "hsl": {
    "h": 210.882,
    "s": 56.198,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56074,
    "c": 0.12792,
    "h": 252.3
  },
  "luminance": 0.17625
}

Semantic roles & 50–950 ramp

primary

#3577BD

secondary

#CAA884

accent

#9648DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3577BD

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

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