#3578DC#3578DC

#3578DC is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.3% C 0.167 H 258.5°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3578DC
RGB	rgb(53, 120, 220)
HSL	hsl(216, 70%, 54%)
HSV	hsv(216, 76%, 86%)
CMYK	cmyk(75.9%, 45.5%, 0%, 13.7%)
CIE-LAB	lab(51.10, 13.52, -57.19)
CIE-LCH	lch(51.10, 58.76, 283.30°)
OKLab	oklab(58.25% -0.0333 -0.164)
OKLCH	oklch(58.25% 0.167 258.5)
XYZ	xyz(21.0982, 19.3547, 70.3202)
Luminance	0.1936 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578DC #DC9935

analogous

#35CBDC #3578DC #4535DC

triadic

#3578DC #DC3578 #78DC35

tetradic

#3578DC #DC35CB #DC9935 #35DC45

square

#3578DC #DC35CB #DC9935 #35DC45

split-complementary

#3578DC #DC4535 #CBDC35

monochromatic

#164180 #1F5BB5 #3578DC #699BE5 #9DBEEE

Accessibility & contrast

On white

4.31

#3578DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#3578DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578DC

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578DC	#FFFFFF	#000000	##000000
##3578DC	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4382E0

Deuteranopia (green-blind)

#1C73DA

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3578dc;
/* rgb */ color: rgb(53, 120, 220);
/* oklch */ color: oklch(58.3% 0.167 258.5);

Tailwind

colors: {
  custom: {
    50: '#839ee7',
    500: '#3578dc',
    950: '#000000',
  },
}

SCSS

$custom: #3578dc;
$custom-light: #839ee7;
$custom-dark: #000000;

JSON

{
  "hex": "#3578dc",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 220
  },
  "hsl": {
    "h": 215.928,
    "s": 70.464,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58253,
    "c": 0.16737,
    "h": 258.5
  },
  "luminance": 0.19357
}

Semantic roles & 50–950 ramp

primary

#3578DC

secondary

#DABD93

accent

#A63BED

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3578DC

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

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