#3578DA#3578DA

#3578DA is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.1% C 0.165 H 258.2°. Best body text is #000000 at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#3578DA
RGB	rgb(53, 120, 218)
HSL	hsl(216, 69%, 53%)
HSV	hsv(216, 76%, 85%)
CMYK	cmyk(75.7%, 45%, 0%, 14.5%)
CIE-LAB	lab(50.98, 12.78, -56.25)
CIE-LCH	lch(50.98, 57.69, 282.80°)
OKLab	oklab(58.12% -0.0336 -0.1613)
OKLCH	oklch(58.12% 0.165 258.2)
XYZ	xyz(20.8349, 19.2494, 68.9335)
Luminance	0.1925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578DA #DA9735

analogous

#35CBDA #3578DA #4435DA

triadic

#3578DA #DA3578 #78DA35

tetradic

#3578DA #DA35CB #DA9735 #35DA44

square

#3578DA #DA35CB #DA9735 #35DA44

split-complementary

#3578DA #DA4435 #CBDA35

monochromatic

#17417E #205BB1 #3578DA #699BE3 #9CBDED

Accessibility & contrast

On white

4.33

#3578DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.85

#3578DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578DA

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578DA	#FFFFFF	#000000	##000000
##3578DA	1.00	4.33	4.85	4.85
#FFFFFF	4.33	1.00	21.00	21.00
#000000	4.85	21.00	1.00	1.00
##000000	4.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4581DE

Deuteranopia (green-blind)

#2172D8

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3578da;
/* rgb */ color: rgb(53, 120, 218);
/* oklch */ color: oklch(58.1% 0.165 258.2);

Tailwind

colors: {
  custom: {
    50: '#839ee6',
    500: '#3578da',
    950: '#000000',
  },
}

SCSS

$custom: #3578da;
$custom-light: #839ee6;
$custom-dark: #000000;

JSON

{
  "hex": "#3578da",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 218
  },
  "hsl": {
    "h": 215.636,
    "s": 69.038,
    "l": 53.137
  },
  "oklch": {
    "l": 0.5812,
    "c": 0.16475,
    "h": 258.2
  },
  "luminance": 0.19252
}

Semantic roles & 50–950 ramp

primary

#3578DA

secondary

#D9BC92

accent

#A43CEC

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0E16

muted

#7D7E84

Preview Lab

Preview with #3578DA

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

Preview Lab → · Contrast checker → · Palette generator →