#3578B4#3578B4

#3578B4 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.115 H 248.5°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3578B4
RGB	rgb(53, 120, 180)
HSL	hsl(208, 55%, 46%)
HSV	hsv(208, 71%, 71%)
CMYK	cmyk(70.6%, 33.3%, 0%, 29.4%)
CIE-LAB	lab(48.86, -1.11, -37.89)
CIE-LCH	lch(48.86, 37.91, 268.32°)
OKLab	oklab(55.79% -0.0424 -0.1074)
OKLCH	oklch(55.79% 0.115 248.5)
XYZ	xyz(16.4198, 17.4833, 45.6804)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578B4 #B47135

analogous

#35B4B0 #3578B4 #3539B4

triadic

#3578B4 #B43578 #78B435

tetradic

#3578B4 #B035B4 #B47135 #39B435

square

#3578B4 #B035B4 #B47135 #39B435

split-complementary

#3578B4 #B43539 #B4B035

monochromatic

#193955 #275885 #3578B4 #5896CE #88B4DC

Accessibility & contrast

On white

4.67

#3578B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#3578B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3578B4

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578B4	#FFFFFF	#000000	##FFFFFF
##3578B4	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7BB7

Deuteranopia (green-blind)

#4B6FB3

Tritanopia (blue-blind)

#00868E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3578b4;
/* rgb */ color: rgb(53, 120, 180);
/* oklch */ color: oklch(55.8% 0.115 248.5);

Tailwind

colors: {
  custom: {
    50: '#7b9ecb',
    500: '#3578b4',
    950: '#000000',
  },
}

SCSS

$custom: #3578b4;
$custom-light: #7b9ecb;
$custom-dark: #000000;

JSON

{
  "hex": "#3578b4",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 180
  },
  "hsl": {
    "h": 208.346,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.55786,
    "c": 0.11549,
    "h": 248.5
  },
  "luminance": 0.17485
}

Semantic roles & 50–950 ramp

primary

#3578B4

secondary

#C6A07F

accent

#904ADE

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3578B4

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

Preview Lab → · Contrast checker → · Palette generator →