#3577B6#3577B6

#3577B6 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.7% C 0.119 H 249.9°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3577B6
RGB	rgb(53, 119, 182)
HSL	hsl(209, 55%, 46%)
HSV	hsv(209, 71%, 71%)
CMYK	cmyk(70.9%, 34.6%, 0%, 28.6%)
CIE-LAB	lab(48.67, 0.21, -39.35)
CIE-LCH	lch(48.67, 39.35, 270.31°)
OKLab	oklab(55.67% -0.0408 -0.1117)
OKLCH	oklch(55.67% 0.119 249.9)
XYZ	xyz(16.5054, 17.3261, 46.7213)
Luminance	0.1733 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B6 #B67435

analogous

#35B6B4 #3577B6 #3536B6

triadic

#3577B6 #B63577 #77B635

tetradic

#3577B6 #B435B6 #B67435 #36B635

square

#3577B6 #B435B6 #B67435 #36B635

split-complementary

#3577B6 #B63536 #B6B435

monochromatic

#193957 #275887 #3577B6 #5995CF #89B4DD

Accessibility & contrast

On white

4.70

#3577B6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3577B6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B6

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B6	#FFFFFF	#000000	##FFFFFF
##3577B6	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7AB9

Deuteranopia (green-blind)

#486EB5

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3577b6;
/* rgb */ color: rgb(53, 119, 182);
/* oklch */ color: oklch(55.7% 0.119 249.9);

Tailwind

colors: {
  custom: {
    50: '#7c9dcc',
    500: '#3577b6',
    950: '#000000',
  },
}

SCSS

$custom: #3577b6;
$custom-light: #7c9dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b6",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 182
  },
  "hsl": {
    "h": 209.302,
    "s": 54.894,
    "l": 46.078
  },
  "oklch": {
    "l": 0.55666,
    "c": 0.11895,
    "h": 249.9
  },
  "luminance": 0.17328
}

Semantic roles & 50–950 ramp

primary

#3577B6

secondary

#C7A380

accent

#924ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3577B6

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

Preview Lab → · Contrast checker → · Palette generator →