#3577B2#3577B2

#3577B2 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.4% C 0.114 H 248.4°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3577B2
RGB	rgb(53, 119, 178)
HSL	hsl(208, 54%, 45%)
HSV	hsv(208, 70%, 70%)
CMYK	cmyk(70.2%, 33.1%, 0%, 30.2%)
CIE-LAB	lab(48.47, -1.23, -37.36)
CIE-LCH	lch(48.47, 37.38, 268.12°)
OKLab	oklab(55.44% -0.042 -0.1059)
OKLCH	oklch(55.44% 0.114 248.4)
XYZ	xyz(16.0979, 17.1632, 44.5753)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3577B2 #B27035

analogous

#35B2AF #3577B2 #3538B2

triadic

#3577B2 #B23577 #77B235

tetradic

#3577B2 #AF35B2 #B27035 #38B235

square

#3577B2 #AF35B2 #B27035 #38B235

split-complementary

#3577B2 #B23538 #B2AF35

monochromatic

#193854 #275783 #3577B2 #5795CD #86B3DB

Accessibility & contrast

On white

4.74

#3577B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3577B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3577B2

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3577B2	#FFFFFF	#000000	##FFFFFF
##3577B2	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB5

Deuteranopia (green-blind)

#4B6EB1

Tritanopia (blue-blind)

#00858C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3577b2;
/* rgb */ color: rgb(53, 119, 178);
/* oklch */ color: oklch(55.4% 0.114 248.4);

Tailwind

colors: {
  custom: {
    50: '#7b9dc9',
    500: '#3577b2',
    950: '#000000',
  },
}

SCSS

$custom: #3577b2;
$custom-light: #7b9dc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3577b2",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 178
  },
  "hsl": {
    "h": 208.32,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.5544,
    "c": 0.11391,
    "h": 248.4
  },
  "luminance": 0.17165
}

Semantic roles & 50–950 ramp

primary

#3577B2

secondary

#C59F7E

accent

#904ADD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3577B2

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

Preview Lab → · Contrast checker → · Palette generator →