#3581D2#3581D2

#3581D2 is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.6% C 0.145 H 252.7°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#3581D2
RGB	rgb(53, 129, 210)
HSL	hsl(211, 64%, 52%)
HSV	hsv(211, 75%, 82%)
CMYK	cmyk(74.8%, 38.6%, 0%, 17.6%)
CIE-LAB	lab(53.07, 4.31, -48.39)
CIE-LCH	lch(53.07, 48.58, 275.09°)
OKLab	oklab(59.59% -0.043 -0.138)
OKLCH	oklch(59.59% 0.145 252.7)
XYZ	xyz(20.9470, 21.1081, 63.9306)
Luminance	0.2111 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581D2 #D28635

analogous

#35D0D2 #3581D2 #3835D2

triadic

#3581D2 #D23581 #81D235

tetradic

#3581D2 #D235D0 #D28635 #35D238

square

#3581D2 #D235D0 #D28635 #35D238

split-complementary

#3581D2 #D23835 #D0D235

monochromatic

#1A4573 #2563A5 #3581D2 #67A0DD #99BFE8

Accessibility & contrast

On white

4.02

#3581D2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#3581D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581D2

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581D2	#FFFFFF	#000000	##000000
##3581D2	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B87D5

Deuteranopia (green-blind)

#4278D0

Tritanopia (blue-blind)

#00949F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3581d2;
/* rgb */ color: rgb(53, 129, 210);
/* oklch */ color: oklch(59.6% 0.145 252.7);

Tailwind

colors: {
  custom: {
    50: '#81a5e0',
    500: '#3581d2',
    950: '#000000',
  },
}

SCSS

$custom: #3581d2;
$custom-light: #81a5e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3581d2",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 210
  },
  "hsl": {
    "h": 210.955,
    "s": 63.563,
    "l": 51.569
  },
  "oklch": {
    "l": 0.59594,
    "c": 0.14457,
    "h": 252.7
  },
  "luminance": 0.21111
}

Semantic roles & 50–950 ramp

primary

#3581D2

secondary

#D4B38F

accent

#9741E7

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3581D2

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

Preview Lab → · Contrast checker → · Palette generator →