#3591AB#3591AB

#3591AB is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.4% C 0.093 H 220.2°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3591AB
RGB	rgb(53, 145, 171)
HSL	hsl(193, 53%, 44%)
HSV	hsv(193, 69%, 67%)
CMYK	cmyk(69%, 15.2%, 0%, 32.9%)
CIE-LAB	lab(56.03, -18.44, -21.56)
CIE-LCH	lch(56.03, 28.37, 229.46°)
OKLab	oklab(61.35% -0.0712 -0.0601)
OKLCH	oklch(61.35% 0.093 220.2)
XYZ	xyz(18.9413, 23.9458, 42.1439)
Luminance	0.2395 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3591AB #AB4F35

analogous

#35AB8A #3591AB #3556AB

triadic

#3591AB #AB3591 #91AB35

tetradic

#3591AB #8A35AB #AB4F35 #56AB35

square

#3591AB #8A35AB #AB4F35 #56AB35

split-complementary

#3591AB #AB3556 #AB8A35

monochromatic

#18424E #27697C #3591AB #53B0CA #82C5D8

Accessibility & contrast

On white

3.63

#3591AB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#3591AB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3591AB

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3591AB	#FFFFFF	#000000	##000000
##3591AB	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818DAC

Deuteranopia (green-blind)

#7181AB

Tritanopia (blue-blind)

#009A99

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #3591ab;
/* rgb */ color: rgb(53, 145, 171);
/* oklch */ color: oklch(61.4% 0.093 220.2);

Tailwind

colors: {
  custom: {
    50: '#7bb1c4',
    500: '#3591ab',
    950: '#000000',
  },
}

SCSS

$custom: #3591ab;
$custom-light: #7bb1c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3591ab",
  "rgb": {
    "r": 53,
    "g": 145,
    "b": 171
  },
  "hsl": {
    "h": 193.22,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.61354,
    "c": 0.09319,
    "h": 220.2
  },
  "luminance": 0.23948
}

Semantic roles & 50–950 ramp

primary

#3591AB

secondary

#C28A7A

accent

#6C4CDC

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1012

muted

#7C7F81

Preview Lab

Preview with #3591AB

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

Preview Lab → · Contrast checker → · Palette generator →