#3580CC#3580CC

#3580CC is a mid, vivid cyan. Relative luminance 0.206; OKLCH L 59.0% C 0.138 H 251.6°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3580CC
RGB	rgb(53, 128, 204)
HSL	hsl(210, 60%, 50%)
HSV	hsv(210, 74%, 80%)
CMYK	cmyk(74%, 37.3%, 0%, 20%)
CIE-LAB	lab(52.46, 2.73, -45.96)
CIE-LCH	lch(52.46, 46.04, 273.40°)
OKLab	oklab(59.01% -0.0436 -0.1309)
OKLCH	oklch(59.01% 0.138 251.6)
XYZ	xyz(20.0824, 20.5526, 60.0237)
Luminance	0.2056 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580CC #CC8135

analogous

#35CBCC #3580CC #3535CC

triadic

#3580CC #CC3580 #80CC35

tetradic

#3580CC #CC35CB #CC8135 #35CC35

square

#3580CC #CC35CB #CC8135 #35CC35

split-complementary

#3580CC #CC3535 #CBCC35

monochromatic

#1B436B #27629C #3580CC #669FD8 #97BDE5

Accessibility & contrast

On white

4.11

#3580CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#3580CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580CC

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580CC	#FFFFFF	#000000	##000000
##3580CC	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D85CF

Deuteranopia (green-blind)

#4677CA

Tritanopia (blue-blind)

#00929C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3580cc;
/* rgb */ color: rgb(53, 128, 204);
/* oklch */ color: oklch(59.0% 0.138 251.6);

Tailwind

colors: {
  custom: {
    50: '#80a4dc',
    500: '#3580cc',
    950: '#000000',
  },
}

SCSS

$custom: #3580cc;
$custom-light: #80a4dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3580cc",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 204
  },
  "hsl": {
    "h": 210.199,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.59011,
    "c": 0.13798,
    "h": 251.6
  },
  "luminance": 0.20555
}

Semantic roles & 50–950 ramp

primary

#3580CC

secondary

#D0AF8D

accent

#9445E3

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3580CC

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

Preview Lab → · Contrast checker → · Palette generator →