#3583CC#3583CC

#3583CC is a mid, vivid cyan. Relative luminance 0.213; OKLCH L 59.7% C 0.135 H 249.9°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3583CC
RGB	rgb(53, 131, 204)
HSL	hsl(209, 60%, 50%)
HSV	hsv(209, 74%, 80%)
CMYK	cmyk(74%, 35.8%, 0%, 20%)
CIE-LAB	lab(53.33, 0.93, -44.58)
CIE-LCH	lch(53.33, 44.59, 271.19°)
OKLab	oklab(59.69% -0.0463 -0.1268)
OKLCH	oklch(59.69% 0.135 249.9)
XYZ	xyz(20.4795, 21.3468, 60.1560)
Luminance	0.2135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3583CC #CC7E35

analogous

#35CCCA #3583CC #3537CC

triadic

#3583CC #CC3583 #83CC35

tetradic

#3583CC #CA35CC #CC7E35 #37CC35

square

#3583CC #CA35CC #CC7E35 #37CC35

split-complementary

#3583CC #CC3537 #CCCA35

monochromatic

#1B456B #27649C #3583CC #66A1D8 #97BFE5

Accessibility & contrast

On white

3.98

#3583CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#3583CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3583CC

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3583CC	#FFFFFF	#000000	##000000
##3583CC	1.00	3.98	5.27	5.27
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6187CF

Deuteranopia (green-blind)

#4B79CB

Tritanopia (blue-blind)

#00949E

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3583cc;
/* rgb */ color: rgb(53, 131, 204);
/* oklch */ color: oklch(59.7% 0.135 249.9);

Tailwind

colors: {
  custom: {
    50: '#80a6dc',
    500: '#3583cc',
    950: '#000000',
  },
}

SCSS

$custom: #3583cc;
$custom-light: #80a6dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3583cc",
  "rgb": {
    "r": 53,
    "g": 131,
    "b": 204
  },
  "hsl": {
    "h": 209.007,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.59693,
    "c": 0.13502,
    "h": 249.9
  },
  "luminance": 0.21349
}

Semantic roles & 50–950 ramp

primary

#3583CC

secondary

#D0AD8D

accent

#9145E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3583CC

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

Preview Lab → · Contrast checker → · Palette generator →