#3577B8#3577B8

#3577B8 is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 55.8% C 0.121 H 250.6°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3577B8
RGB	rgb(53, 119, 184)
HSL	hsl(210, 55%, 46%)
HSV	hsv(210, 71%, 72%)
CMYK	cmyk(71.2%, 35.3%, 0%, 27.8%)
CIE-LAB	lab(48.77, 0.93, -40.35)
CIE-LCH	lch(48.77, 40.36, 271.32°)
OKLab	oklab(55.78% -0.0403 -0.1146)
OKLCH	oklch(55.78% 0.121 250.6)
XYZ	xyz(16.7135, 17.4094, 47.8176)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B8 #B87635

analogous

#35B8B8 #3577B8 #3536B8

triadic

#3577B8 #B83577 #77B835

tetradic

#3577B8 #B835B8 #B87635 #36B835

square

#3577B8 #B835B8 #B87635 #36B835

split-complementary

#3577B8 #B83536 #B8B835

monochromatic

#1A3A59 #275888 #3577B8 #5B96D0 #8AB4DD

Accessibility & contrast

On white

4.69

#3577B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#3577B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B8

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B8	#FFFFFF	#000000	##FFFFFF
##3577B8	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7BBB

Deuteranopia (green-blind)

#476EB7

Tritanopia (blue-blind)

#00868F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3577b8;
/* rgb */ color: rgb(53, 119, 184);
/* oklch */ color: oklch(55.8% 0.121 250.6);

Tailwind

colors: {
  custom: {
    50: '#7c9dcd',
    500: '#3577b8',
    950: '#000000',
  },
}

SCSS

$custom: #3577b8;
$custom-light: #7c9dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b8",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 184
  },
  "hsl": {
    "h": 209.771,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.55781,
    "c": 0.12149,
    "h": 250.6
  },
  "luminance": 0.17411
}

Semantic roles & 50–950 ramp

primary

#3577B8

secondary

#C7A481

accent

#9349DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3577B8

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

Preview Lab → · Contrast checker → · Palette generator →