#3581BB#3581BB

#3581BB is a mid, moderate cyan. Relative luminance 0.200; OKLCH L 58.3% C 0.116 H 244.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3581BB
RGB	rgb(53, 129, 187)
HSL	hsl(206, 56%, 47%)
HSV	hsv(206, 72%, 73%)
CMYK	cmyk(71.7%, 31%, 0%, 26.7%)
CIE-LAB	lab(51.89, -3.97, -37.16)
CIE-LCH	lch(51.89, 37.37, 263.90°)
OKLab	oklab(58.28% -0.0492 -0.1052)
OKLCH	oklch(58.28% 0.116 244.9)
XYZ	xyz(18.2847, 20.0432, 49.9092)
Luminance	0.2004 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3581BB #BB6F35

analogous

#35BBB2 #3581BB #353EBB

triadic

#3581BB #BB3581 #81BB35

tetradic

#3581BB #B235BB #BB6F35 #3EBB35

square

#3581BB #B235BB #BB6F35 #3EBB35

split-complementary

#3581BB #BB353E #BBB235

monochromatic

#1A3F5C #27608B #3581BB #5C9ED1 #8CBBDE

Accessibility & contrast

On white

4.19

#3581BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#3581BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581BB

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3581BB	#FFFFFF	#000000	##000000
##3581BB	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6783BE

Deuteranopia (green-blind)

#5476BA

Tritanopia (blue-blind)

#008F96

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3581bb;
/* rgb */ color: rgb(53, 129, 187);
/* oklch */ color: oklch(58.3% 0.116 244.9);

Tailwind

colors: {
  custom: {
    50: '#7da5cf',
    500: '#3581bb',
    950: '#000000',
  },
}

SCSS

$custom: #3581bb;
$custom-light: #7da5cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3581bb",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 187
  },
  "hsl": {
    "h": 205.97,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.5828,
    "c": 0.11615,
    "h": 244.9
  },
  "luminance": 0.20045
}

Semantic roles & 50–950 ramp

primary

#3581BB

secondary

#C9A183

accent

#8A49DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3581BB

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

Preview Lab → · Contrast checker → · Palette generator →