#3599BB#3599BB

#3599BB is a light, moderate cyan. Relative luminance 0.271; OKLCH L 64.0% C 0.103 H 224.8°. Best body text is #000000 at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#3599BB
RGB	rgb(53, 153, 187)
HSL	hsl(195, 56%, 47%)
HSV	hsv(195, 72%, 73%)
CMYK	cmyk(71.7%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(59.09, -17.48, -25.95)
CIE-LCH	lch(59.09, 31.29, 236.03°)
OKLab	oklab(64.01% -0.0732 -0.0726)
OKLCH	oklch(64.01% 0.103 224.8)
XYZ	xyz(21.8254, 27.1247, 51.0894)
Luminance	0.2713 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3599BB #BB5735

analogous

#35BB9A #3599BB #3556BB

triadic

#3599BB #BB3599 #99BB35

tetradic

#3599BB #9A35BB #BB5735 #56BB35

square

#3599BB #9A35BB #BB5735 #56BB35

split-complementary

#3599BB #BB3556 #BB9A35

monochromatic

#1A4B5C #27728B #3599BB #5CB3D1 #8CC9DE

Accessibility & contrast

On white

3.27

#3599BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.43

#3599BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3599BB

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3599BB	#FFFFFF	#000000	##000000
##3599BB	1.00	3.27	6.43	6.43
#FFFFFF	3.27	1.00	21.00	21.00
#000000	6.43	21.00	1.00	1.00
##000000	6.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8696BD

Deuteranopia (green-blind)

#7488BB

Tritanopia (blue-blind)

#00A3A4

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #3599bb;
/* rgb */ color: rgb(53, 153, 187);
/* oklch */ color: oklch(64.0% 0.103 224.8);

Tailwind

colors: {
  custom: {
    50: '#7eb7cf',
    500: '#3599bb',
    950: '#000000',
  },
}

SCSS

$custom: #3599bb;
$custom-light: #7eb7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3599bb",
  "rgb": {
    "r": 53,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 195.224,
    "s": 55.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.64009,
    "c": 0.1031,
    "h": 224.8
  },
  "luminance": 0.27127
}

Semantic roles & 50–950 ramp

primary

#3599BB

secondary

#C99583

accent

#6F49DF

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #3599BB

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

Preview Lab → · Contrast checker → · Palette generator →