#3577C9#3577C9

#3577C9 is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.8% C 0.144 H 255.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3577C9
RGB	rgb(53, 119, 201)
HSL	hsl(213, 58%, 50%)
HSV	hsv(213, 74%, 79%)
CMYK	cmyk(73.6%, 40.8%, 0%, 21.2%)
CIE-LAB	lab(49.70, 7.13, -48.64)
CIE-LCH	lch(49.70, 49.16, 278.34°)
OKLab	oklab(56.8% -0.0361 -0.1389)
OKLCH	oklch(56.8% 0.144 255.4)
XYZ	xyz(18.6037, 18.1655, 57.7728)
Luminance	0.1817 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577C9 #C98735

analogous

#35C1C9 #3577C9 #3D35C9

triadic

#3577C9 #C93577 #77C935

tetradic

#3577C9 #C935C1 #C98735 #35C93D

square

#3577C9 #C935C1 #C98735 #35C93D

split-complementary

#3577C9 #C93D35 #C1C935

monochromatic

#1B3E68 #285A99 #3577C9 #6597D6 #95B8E3

Accessibility & contrast

On white

4.53

#3577C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#3577C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3577C9

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577C9	#FFFFFF	#000000	##000000
##3577C9	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507ECC

Deuteranopia (green-blind)

#3770C7

Tritanopia (blue-blind)

#008A96

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3577c9;
/* rgb */ color: rgb(53, 119, 201);
/* oklch */ color: oklch(56.8% 0.144 255.4);

Tailwind

colors: {
  custom: {
    50: '#7f9dda',
    500: '#3577c9',
    950: '#000000',
  },
}

SCSS

$custom: #3577c9;
$custom-light: #7f9dda;
$custom-dark: #000000;

JSON

{
  "hex": "#3577c9",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 201
  },
  "hsl": {
    "h": 213.243,
    "s": 58.268,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56804,
    "c": 0.14356,
    "h": 255.4
  },
  "luminance": 0.18168
}

Semantic roles & 50–950 ramp

primary

#3577C9

secondary

#CEB18B

accent

#9C46E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #3577C9

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

Preview Lab → · Contrast checker → · Palette generator →