#3577B7#3577B7

#3577B7 is a mid, vivid cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.120 H 250.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3577B7
RGB	rgb(53, 119, 183)
HSL	hsl(210, 55%, 46%)
HSV	hsv(210, 71%, 72%)
CMYK	cmyk(71%, 35%, 0%, 28.2%)
CIE-LAB	lab(48.72, 0.57, -39.85)
CIE-LCH	lch(48.72, 39.85, 270.82°)
OKLab	oklab(55.72% -0.0406 -0.1132)
OKLCH	oklch(55.72% 0.12 250.3)
XYZ	xyz(16.6091, 17.3676, 47.2675)
Luminance	0.1737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B7 #B77535

analogous

#35B7B6 #3577B7 #3536B7

triadic

#3577B7 #B73577 #77B735

tetradic

#3577B7 #B635B7 #B77535 #36B735

square

#3577B7 #B635B7 #B77535 #36B735

split-complementary

#3577B7 #B73536 #B7B635

monochromatic

#1A3958 #275888 #3577B7 #5A96CF #89B4DD

Accessibility & contrast

On white

4.69

#3577B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3577B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B7

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B7	#FFFFFF	#000000	##FFFFFF
##3577B7	1.00	4.69	4.47	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7ABA

Deuteranopia (green-blind)

#476EB6

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3577b7;
/* rgb */ color: rgb(53, 119, 183);
/* oklch */ color: oklch(55.7% 0.120 250.3);

Tailwind

colors: {
  custom: {
    50: '#7c9dcd',
    500: '#3577b7',
    950: '#000000',
  },
}

SCSS

$custom: #3577b7;
$custom-light: #7c9dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b7",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 183
  },
  "hsl": {
    "h": 209.538,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.55724,
    "c": 0.12022,
    "h": 250.3
  },
  "luminance": 0.17369
}

Semantic roles & 50–950 ramp

primary

#3577B7

secondary

#C7A381

accent

#9349DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3577B7

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

Preview Lab → · Contrast checker → · Palette generator →