#3578B2#3578B2

#3578B2 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.113 H 247.6°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3578B2
RGB	rgb(53, 120, 178)
HSL	hsl(208, 54%, 45%)
HSV	hsv(208, 70%, 70%)
CMYK	cmyk(70.2%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.76, -1.83, -36.89)
CIE-LCH	lch(48.76, 36.93, 267.16°)
OKLab	oklab(55.67% -0.043 -0.1045)
OKLCH	oklch(55.67% 0.113 247.6)
XYZ	xyz(16.2175, 17.4024, 44.6152)
Luminance	0.1740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578B2 #B26F35

analogous

#35B2AE #3578B2 #3539B2

triadic

#3578B2 #B23578 #78B235

tetradic

#3578B2 #AE35B2 #B26F35 #39B235

square

#3578B2 #AE35B2 #B26F35 #39B235

split-complementary

#3578B2 #B23539 #B2AE35

monochromatic

#193854 #275883 #3578B2 #5796CD #86B4DB

Accessibility & contrast

On white

4.69

#3578B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#3578B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3578B2

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578B2	#FFFFFF	#000000	##FFFFFF
##3578B2	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB4

Deuteranopia (green-blind)

#4C6EB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3578b2;
/* rgb */ color: rgb(53, 120, 178);
/* oklch */ color: oklch(55.7% 0.113 247.6);

Tailwind

colors: {
  custom: {
    50: '#7b9ec9',
    500: '#3578b2',
    950: '#000000',
  },
}

SCSS

$custom: #3578b2;
$custom-light: #7b9ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3578b2",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 207.84,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.55674,
    "c": 0.113,
    "h": 247.6
  },
  "luminance": 0.17404
}

Semantic roles & 50–950 ramp

primary

#3578B2

secondary

#C59F7E

accent

#8F4ADD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3578B2

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

Preview Lab → · Contrast checker → · Palette generator →