#3577BC#3577BC

#3577BC is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.0% C 0.127 H 252.0°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3577BC
RGB	rgb(53, 119, 188)
HSL	hsl(211, 56%, 47%)
HSV	hsv(211, 72%, 74%)
CMYK	cmyk(71.8%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(48.98, 2.38, -42.32)
CIE-LCH	lch(48.98, 42.39, 273.22°)
OKLab	oklab(56.02% -0.0392 -0.1204)
OKLCH	oklch(56.02% 0.127 252)
XYZ	xyz(17.1387, 17.5795, 50.0571)
Luminance	0.1758 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577BC #BC7A35

analogous

#35BBBC #3577BC #3735BC

triadic

#3577BC #BC3577 #77BC35

tetradic

#3577BC #BC35BB #BC7A35 #35BC37

square

#3577BC #BC35BB #BC7A35 #35BC37

split-complementary

#3577BC #BC3735 #BBBC35

monochromatic

#1A3B5D #28598C #3577BC #5D96D1 #8DB5DF

Accessibility & contrast

On white

4.65

#3577BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3577BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3577BC

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577BC	#FFFFFF	#000000	##FFFFFF
##3577BC	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#446FBB

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3577bc;
/* rgb */ color: rgb(53, 119, 188);
/* oklch */ color: oklch(56.0% 0.127 252.0);

Tailwind

colors: {
  custom: {
    50: '#7d9dd0',
    500: '#3577bc',
    950: '#000000',
  },
}

SCSS

$custom: #3577bc;
$custom-light: #7d9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3577bc",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 210.667,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56015,
    "c": 0.12663,
    "h": 252
  },
  "luminance": 0.17581
}

Semantic roles & 50–950 ramp

primary

#3577BC

secondary

#C9A784

accent

#9648DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3577BC

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

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