#3578B5#3578B5

#3578B5 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.117 H 248.9°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3578B5
RGB	rgb(53, 120, 181)
HSL	hsl(209, 55%, 46%)
HSV	hsv(209, 71%, 71%)
CMYK	cmyk(70.7%, 33.7%, 0%, 29%)
CIE-LAB	lab(48.91, -0.75, -38.39)
CIE-LCH	lch(48.91, 38.40, 268.88°)
OKLab	oklab(55.84% -0.0421 -0.1089)
OKLCH	oklch(55.84% 0.117 248.9)
XYZ	xyz(16.5220, 17.5242, 46.2189)
Luminance	0.1753 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578B5 #B57235

analogous

#35B5B2 #3578B5 #3538B5

triadic

#3578B5 #B53578 #78B535

tetradic

#3578B5 #B235B5 #B57235 #38B535

square

#3578B5 #B235B5 #B57235 #38B535

split-complementary

#3578B5 #B53538 #B5B235

monochromatic

#193956 #275986 #3578B5 #5996CE #88B4DC

Accessibility & contrast

On white

4.66

#3578B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3578B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3578B5

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578B5	#FFFFFF	#000000	##FFFFFF
##3578B5	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7BB8

Deuteranopia (green-blind)

#4A6FB4

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3578b5;
/* rgb */ color: rgb(53, 120, 181);
/* oklch */ color: oklch(55.8% 0.117 248.9);

Tailwind

colors: {
  custom: {
    50: '#7c9ecb',
    500: '#3578b5',
    950: '#000000',
  },
}

SCSS

$custom: #3578b5;
$custom-light: #7c9ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3578b5",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 181
  },
  "hsl": {
    "h": 208.594,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.55842,
    "c": 0.11674,
    "h": 248.9
  },
  "luminance": 0.17526
}

Semantic roles & 50–950 ramp

primary

#3578B5

secondary

#C6A180

accent

#904ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3578B5

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

Preview Lab → · Contrast checker → · Palette generator →