#3577BF#3577BF

#3577BF is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.2% C 0.131 H 252.9°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3577BF
RGB	rgb(53, 119, 191)
HSL	hsl(211, 57%, 48%)
HSV	hsv(211, 72%, 75%)
CMYK	cmyk(72.3%, 37.7%, 0%, 25.1%)
CIE-LAB	lab(49.14, 3.47, -43.79)
CIE-LCH	lch(49.14, 43.93, 274.54°)
OKLab	oklab(56.19% -0.0385 -0.1247)
OKLCH	oklch(56.19% 0.131 252.9)
XYZ	xyz(17.4655, 17.7102, 51.7780)
Luminance	0.1771 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577BF #BF7D35

analogous

#35BCBF #3577BF #3835BF

triadic

#3577BF #BF3577 #77BF35

tetradic

#3577BF #BF35BC #BF7D35 #35BF38

square

#3577BF #BF35BC #BF7D35 #35BF38

split-complementary

#3577BF #BF3835 #BCBF35

monochromatic

#1A3B5F #28598F #3577BF #5F96D3 #8FB5E0

Accessibility & contrast

On white

4.62

#3577BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3577BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3577BF

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577BF	#FFFFFF	#000000	##FFFFFF
##3577BF	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#567CC2

Deuteranopia (green-blind)

#416FBE

Tritanopia (blue-blind)

#008892

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3577bf;
/* rgb */ color: rgb(53, 119, 191);
/* oklch */ color: oklch(56.2% 0.131 252.9);

Tailwind

colors: {
  custom: {
    50: '#7d9dd3',
    500: '#3577bf',
    950: '#000000',
  },
}

SCSS

$custom: #3577bf;
$custom-light: #7d9dd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3577bf",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 191
  },
  "hsl": {
    "h": 211.304,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56193,
    "c": 0.13051,
    "h": 252.9
  },
  "luminance": 0.17712
}

Semantic roles & 50–950 ramp

primary

#3577BF

secondary

#CAA985

accent

#9748E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3577BF

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

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