#3581DB#3581DB

#3581DB is a mid, vivid cyan. Relative luminance 0.216; OKLCH L 60.1% C 0.156 H 254.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3581DB
RGB	rgb(53, 129, 219)
HSL	hsl(213, 70%, 53%)
HSV	hsv(213, 76%, 86%)
CMYK	cmyk(75.8%, 41.1%, 0%, 14.1%)
CIE-LAB	lab(53.57, 7.60, -52.67)
CIE-LCH	lch(53.57, 53.22, 278.21°)
OKLab	oklab(60.15% -0.0409 -0.1506)
OKLCH	oklch(60.15% 0.156 254.8)
XYZ	xyz(22.0999, 21.5693, 70.0026)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581DB #DB8F35

analogous

#35D4DB #3581DB #3C35DB

triadic

#3581DB #DB3581 #81DB35

tetradic

#3581DB #DB35D4 #DB8F35 #35DB3C

square

#3581DB #DB35D4 #DB8F35 #35DB3C

split-complementary

#3581DB #DB3C35 #D4DB35

monochromatic

#17467F #2063B3 #3581DB #69A1E4 #9DC2EE

Accessibility & contrast

On white

3.95

#3581DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3581DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581DB

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581DB	#FFFFFF	#000000	##000000
##3581DB	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)

#5588DF

Deuteranopia (green-blind)

#3979D9

Tritanopia (blue-blind)

#0096A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3581db;
/* rgb */ color: rgb(53, 129, 219);
/* oklch */ color: oklch(60.1% 0.156 254.8);

Tailwind

colors: {
  custom: {
    50: '#83a5e7',
    500: '#3581db',
    950: '#000000',
  },
}

SCSS

$custom: #3581db;
$custom-light: #83a5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#3581db",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 219
  },
  "hsl": {
    "h": 212.53,
    "s": 69.748,
    "l": 53.333
  },
  "oklch": {
    "l": 0.60145,
    "c": 0.15607,
    "h": 254.8
  },
  "luminance": 0.21572
}

Semantic roles & 50–950 ramp

primary

#3581DB

secondary

#DAB992

accent

#9B3BED

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3581DB

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

Preview Lab → · Contrast checker → · Palette generator →