#3578CC#3578CC

#3578CC is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.2% C 0.146 H 255.6°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#3578CC
RGB	rgb(53, 120, 204)
HSL	hsl(213, 60%, 50%)
HSV	hsv(213, 74%, 80%)
CMYK	cmyk(74%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.15, 7.62, -49.63)
CIE-LCH	lch(50.15, 50.21, 278.73°)
OKLab	oklab(57.22% -0.0364 -0.1418)
OKLCH	oklch(57.22% 0.146 255.6)
XYZ	xyz(19.0797, 18.5473, 59.6895)
Luminance	0.1855 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3578CC #CC8935

analogous

#35C4CC #3578CC #3D35CC

triadic

#3578CC #CC3578 #78CC35

tetradic

#3578CC #CC35C4 #CC8935 #35CC3D

square

#3578CC #CC35C4 #CC8935 #35CC3D

split-complementary

#3578CC #CC3D35 #C4CC35

monochromatic

#1B3F6B #275B9C #3578CC #6699D8 #97B9E5

Accessibility & contrast

On white

4.46

#3578CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#3578CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3578CC

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3578CC	#FFFFFF	#000000	##000000
##3578CC	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507FCF

Deuteranopia (green-blind)

#3671CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3578cc;
/* rgb */ color: rgb(53, 120, 204);
/* oklch */ color: oklch(57.2% 0.146 255.6);

Tailwind

colors: {
  custom: {
    50: '#809edc',
    500: '#3578cc',
    950: '#000000',
  },
}

SCSS

$custom: #3578cc;
$custom-light: #809edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3578cc",
  "rgb": {
    "r": 53,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 213.377,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.57215,
    "c": 0.1464,
    "h": 255.6
  },
  "luminance": 0.18549
}

Semantic roles & 50–950 ramp

primary

#3578CC

secondary

#D0B28D

accent

#9D45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3578CC

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

Preview Lab → · Contrast checker → · Palette generator →