#3577CC#3577CC

#3577CC is a mid, vivid cyan. Relative luminance 0.183; OKLCH L 57.0% C 0.147 H 256.1°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3577CC
RGB	rgb(53, 119, 204)
HSL	hsl(214, 60%, 50%)
HSV	hsv(214, 74%, 80%)
CMYK	cmyk(74%, 41.7%, 0%, 20%)
CIE-LAB	lab(49.87, 8.24, -50.08)
CIE-LCH	lch(49.87, 50.76, 279.34°)
OKLab	oklab(56.99% -0.0355 -0.1432)
OKLCH	oklch(56.99% 0.147 256.1)
XYZ	xyz(18.9601, 18.3080, 59.6496)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577CC #CC8A35

analogous

#35C2CC #3577CC #3E35CC

triadic

#3577CC #CC3577 #77CC35

tetradic

#3577CC #CC35C2 #CC8A35 #35CC3E

square

#3577CC #CC35C2 #CC8A35 #35CC3E

split-complementary

#3577CC #CC3E35 #C2CC35

monochromatic

#1B3E6B #275B9C #3577CC #6698D8 #97B9E5

Accessibility & contrast

On white

4.50

#3577CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#3577CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3577CC

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577CC	#FFFFFF	#000000	##000000
##3577CC	1.00	4.50	4.66	4.66
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7ECF

Deuteranopia (green-blind)

#3470CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3577cc;
/* rgb */ color: rgb(53, 119, 204);
/* oklch */ color: oklch(57.0% 0.147 256.1);

Tailwind

colors: {
  custom: {
    50: '#809ddc',
    500: '#3577cc',
    950: '#000000',
  },
}

SCSS

$custom: #3577cc;
$custom-light: #809ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3577cc",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 213.775,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56993,
    "c": 0.14749,
    "h": 256.1
  },
  "luminance": 0.1831
}

Semantic roles & 50–950 ramp

primary

#3577CC

secondary

#D0B38D

accent

#9E45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3577CC

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

Preview Lab → · Contrast checker → · Palette generator →