#3577B4#3577B4

#3577B4 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.6% C 0.116 H 249.2°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3577B4
RGB	rgb(53, 119, 180)
HSL	hsl(209, 55%, 46%)
HSV	hsv(209, 71%, 71%)
CMYK	cmyk(70.6%, 33.9%, 0%, 29.4%)
CIE-LAB	lab(48.57, -0.51, -38.36)
CIE-LCH	lch(48.57, 38.36, 269.24°)
OKLab	oklab(55.55% -0.0414 -0.1088)
OKLCH	oklch(55.55% 0.116 249.2)
XYZ	xyz(16.3002, 17.2441, 45.6406)
Luminance	0.1725 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B4 #B47235

analogous

#35B4B1 #3577B4 #3537B4

triadic

#3577B4 #B43577 #77B435

tetradic

#3577B4 #B135B4 #B47235 #37B435

square

#3577B4 #B135B4 #B47235 #37B435

split-complementary

#3577B4 #B43537 #B4B135

monochromatic

#193855 #275885 #3577B4 #5895CE #88B3DC

Accessibility & contrast

On white

4.72

#3577B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#3577B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B4

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B4	#FFFFFF	#000000	##FFFFFF
##3577B4	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7AB7

Deuteranopia (green-blind)

#4A6EB3

Tritanopia (blue-blind)

#00858D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3577b4;
/* rgb */ color: rgb(53, 119, 180);
/* oklch */ color: oklch(55.6% 0.116 249.2);

Tailwind

colors: {
  custom: {
    50: '#7b9dcb',
    500: '#3577b4',
    950: '#000000',
  },
}

SCSS

$custom: #3577b4;
$custom-light: #7b9dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b4",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 180
  },
  "hsl": {
    "h": 208.819,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.55552,
    "c": 0.11642,
    "h": 249.2
  },
  "luminance": 0.17246
}

Semantic roles & 50–950 ramp

primary

#3577B4

secondary

#C6A17F

accent

#914ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3577B4

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

Preview Lab → · Contrast checker → · Palette generator →