#559DB1#559DB1

#559DB1 is a light, moderate cyan. Relative luminance 0.292; OKLCH L 65.7% C 0.078 H 218.0°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#559DB1
RGB	rgb(85, 157, 177)
HSL	hsl(193, 37%, 51%)
HSV	hsv(193, 52%, 69%)
CMYK	cmyk(52%, 11.3%, 0%, 30.6%)
CIE-LAB	lab(60.97, -16.91, -17.33)
CIE-LCH	lch(60.97, 24.22, 225.70°)
OKLab	oklab(65.69% -0.0614 -0.0479)
OKLCH	oklch(65.69% 0.078 218)
XYZ	xyz(23.7361, 29.2175, 45.9752)
Luminance	0.2922 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#559DB1 #B16955

analogous

#55B197 #559DB1 #556FB1

triadic

#559DB1 #B1559D #9DB155

tetradic

#559DB1 #9755B1 #B16955 #6FB155

square

#559DB1 #9755B1 #B16955 #6FB155

split-complementary

#559DB1 #B1556F #B19755

monochromatic

#2C5460 #3F798A #559DB1 #7FB5C4 #A9CDD7

Accessibility & contrast

On white

3.07

#559DB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#559DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #559DB1

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##559DB1	#FFFFFF	#000000	##000000
##559DB1	1.00	3.07	6.84	6.84
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.84	21.00	1.00	1.00
##000000	6.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9099B2

Deuteranopia (green-blind)

#828FB1

Tritanopia (blue-blind)

#19A4A3

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #559db1;
/* rgb */ color: rgb(85, 157, 177);
/* oklch */ color: oklch(65.7% 0.078 218.0);

Tailwind

colors: {
  custom: {
    50: '#8cbac8',
    500: '#559db1',
    950: '#000000',
  },
}

SCSS

$custom: #559db1;
$custom-light: #8cbac8;
$custom-dark: #000000;

JSON

{
  "hex": "#559db1",
  "rgb": {
    "r": 85,
    "g": 157,
    "b": 177
  },
  "hsl": {
    "h": 193.043,
    "s": 37.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.65689,
    "c": 0.07787,
    "h": 218
  },
  "luminance": 0.2922
}

Semantic roles & 50–950 ramp

primary

#559DB1

secondary

#C5A59D

accent

#745BCD

background

#F8FBFC

surface

#F0F6F8

border

#CBD0D1

text

#0C1113

muted

#7D8082

Preview Lab

Preview with #559DB1

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

Preview Lab → · Contrast checker → · Palette generator →