#3578B3#3578B3

#3578B3 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.114 H 248.1°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3578B3
RGB	rgb(53, 120, 179)
HSL	hsl(208, 54%, 45%)
HSV	hsv(208, 70%, 70%)
CMYK	cmyk(70.4%, 33%, 0%, 29.8%)
CIE-LAB	lab(48.81, -1.47, -37.39)
CIE-LCH	lch(48.81, 37.42, 267.75°)
OKLab	oklab(55.73% -0.0427 -0.106)
OKLCH	oklch(55.73% 0.114 248.1)
XYZ	xyz(16.3183, 17.4427, 45.1459)
Luminance	0.1744 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578B3 #B37035

analogous

#35B3AF #3578B3 #3539B3

triadic

#3578B3 #B33578 #78B335

tetradic

#3578B3 #AF35B3 #B37035 #39B335

square

#3578B3 #AF35B3 #B37035 #39B335

split-complementary

#3578B3 #B33539 #B3AF35

monochromatic

#193955 #275884 #3578B3 #5896CD #87B4DB

Accessibility & contrast

On white

4.68

#3578B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3578B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3578B3

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578B3	#FFFFFF	#000000	##FFFFFF
##3578B3	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7BB6

Deuteranopia (green-blind)

#4C6FB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3578b3;
/* rgb */ color: rgb(53, 120, 179);
/* oklch */ color: oklch(55.7% 0.114 248.1);

Tailwind

colors: {
  custom: {
    50: '#7b9eca',
    500: '#3578b3',
    950: '#000000',
  },
}

SCSS

$custom: #3578b3;
$custom-light: #7b9eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3578b3",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 208.095,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.5573,
    "c": 0.11425,
    "h": 248.1
  },
  "luminance": 0.17444
}

Semantic roles & 50–950 ramp

primary

#3578B3

secondary

#C5A07F

accent

#8F4ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3578B3

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

Preview Lab → · Contrast checker → · Palette generator →