#3577AB#3577AB

#3577AB is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 55.1% C 0.105 H 245.3°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3577AB
RGB	rgb(53, 119, 171)
HSL	hsl(206, 53%, 44%)
HSV	hsv(206, 69%, 67%)
CMYK	cmyk(69%, 30.4%, 0%, 32.9%)
CIE-LAB	lab(48.12, -3.72, -33.83)
CIE-LCH	lch(48.12, 34.04, 263.72°)
OKLab	oklab(55.06% -0.0441 -0.0956)
OKLCH	oklch(55.06% 0.105 245.3)
XYZ	xyz(15.4129, 16.8892, 40.9678)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577AB #AB6935

analogous

#35ABA4 #3577AB #353CAB

triadic

#3577AB #AB3577 #77AB35

tetradic

#3577AB #A435AB #AB6935 #3CAB35

square

#3577AB #A435AB #AB6935 #3CAB35

split-complementary

#3577AB #AB353C #ABA435

monochromatic

#18364E #27567C #3577AB #5396CA #82B2D8

Accessibility & contrast

On white

4.80

#3577AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3577AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577AB

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577AB	#FFFFFF	#000000	##FFFFFF
##3577AB	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6079AD

Deuteranopia (green-blind)

#4F6DAA

Tritanopia (blue-blind)

#008489

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3577ab;
/* rgb */ color: rgb(53, 119, 171);
/* oklch */ color: oklch(55.1% 0.105 245.3);

Tailwind

colors: {
  custom: {
    50: '#7a9ec4',
    500: '#3577ab',
    950: '#000000',
  },
}

SCSS

$custom: #3577ab;
$custom-light: #7a9ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#3577ab",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 171
  },
  "hsl": {
    "h": 206.441,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.55055,
    "c": 0.1053,
    "h": 245.3
  },
  "luminance": 0.16891
}

Semantic roles & 50–950 ramp

primary

#3577AB

secondary

#C29A7A

accent

#8B4CDC

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3577AB

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

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