#3591B8#3591B8

#3591B8 is a mid, moderate cyan. Relative luminance 0.245; OKLCH L 61.9% C 0.103 H 230.0°. Best body text is #000000 at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#3591B8
RGB	rgb(53, 145, 184)
HSL	hsl(198, 55%, 46%)
HSV	hsv(198, 71%, 72%)
CMYK	cmyk(71.2%, 21.2%, 0%, 27.8%)
CIE-LAB	lab(56.55, -14.13, -28.17)
CIE-LCH	lch(56.55, 31.52, 243.36°)
OKLab	oklab(61.94% -0.0662 -0.079)
OKLCH	oklch(61.94% 0.103 230)
XYZ	xyz(20.2419, 24.4661, 48.9937)
Luminance	0.2447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3591B8 #B85C35

analogous

#35B89E #3591B8 #3550B8

triadic

#3591B8 #B83591 #91B835

tetradic

#3591B8 #9E35B8 #B85C35 #50B835

square

#3591B8 #9E35B8 #B85C35 #50B835

split-complementary

#3591B8 #B83550 #B89E35

monochromatic

#1A4659 #276C88 #3591B8 #5BADD0 #8AC5DD

Accessibility & contrast

On white

3.56

#3591B8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.89

#3591B8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3591B8

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3591B8	#FFFFFF	#000000	##000000
##3591B8	1.00	3.56	5.89	5.89
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.89	21.00	1.00	1.00
##000000	5.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8FBA

Deuteranopia (green-blind)

#6B82B7

Tritanopia (blue-blind)

#009C9E

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3591b8;
/* rgb */ color: rgb(53, 145, 184);
/* oklch */ color: oklch(61.9% 0.103 230.0);

Tailwind

colors: {
  custom: {
    50: '#7db1cd',
    500: '#3591b8',
    950: '#000000',
  },
}

SCSS

$custom: #3591b8;
$custom-light: #7db1cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3591b8",
  "rgb": {
    "r": 53,
    "g": 145,
    "b": 184
  },
  "hsl": {
    "h": 197.863,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.6194,
    "c": 0.10312,
    "h": 230
  },
  "luminance": 0.24468
}

Semantic roles & 50–950 ramp

primary

#3591B8

secondary

#C79681

accent

#7649DF

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3591B8

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

Preview Lab → · Contrast checker → · Palette generator →