#3584CB#3584CB

#3584CB is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 59.9% C 0.133 H 249.0°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3584CB
RGB	rgb(53, 132, 203)
HSL	hsl(208, 59%, 50%)
HSV	hsv(208, 74%, 80%)
CMYK	cmyk(73.9%, 35%, 0%, 20.4%)
CIE-LAB	lab(53.57, -0.03, -43.63)
CIE-LCH	lch(53.57, 43.63, 269.96°)
OKLab	oklab(59.86% -0.0475 -0.124)
OKLCH	oklch(59.86% 0.133 249)
XYZ	xyz(20.4949, 21.5689, 59.5714)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3584CB #CB7C35

analogous

#35CBC7 #3584CB #3539CB

triadic

#3584CB #CB3584 #84CB35

tetradic

#3584CB #C735CB #CB7C35 #39CB35

square

#3584CB #C735CB #CB7C35 #39CB35

split-complementary

#3584CB #CB3539 #CBC735

monochromatic

#1B456A #28649B #3584CB #66A2D8 #96BFE4

Accessibility & contrast

On white

3.95

#3584CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3584CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3584CB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3584CB	#FFFFFF	#000000	##000000
##3584CB	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6388CE

Deuteranopia (green-blind)

#4E7ACA

Tritanopia (blue-blind)

#00959E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3584cb;
/* rgb */ color: rgb(53, 132, 203);
/* oklch */ color: oklch(59.9% 0.133 249.0);

Tailwind

colors: {
  custom: {
    50: '#80a7db',
    500: '#3584cb',
    950: '#000000',
  },
}

SCSS

$custom: #3584cb;
$custom-light: #80a7db;
$custom-dark: #000000;

JSON

{
  "hex": "#3584cb",
  "rgb": {
    "r": 53,
    "g": 132,
    "b": 203
  },
  "hsl": {
    "h": 208.4,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.59864,
    "c": 0.13283,
    "h": 249
  },
  "luminance": 0.21571
}

Semantic roles & 50–950 ramp

primary

#3584CB

secondary

#CFAC8C

accent

#9046E2

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3584CB

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

Preview Lab → · Contrast checker → · Palette generator →