#559BCB#559BCB

#559BCB is a light, moderate cyan. Relative luminance 0.297; OKLCH L 66.3% C 0.101 H 240.6°. Best body text is #000000 at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#559BCB
RGB	rgb(85, 155, 203)
HSL	hsl(204, 53%, 56%)
HSV	hsv(204, 58%, 80%)
CMYK	cmyk(58.1%, 23.6%, 0%, 20.4%)
CIE-LAB	lab(61.38, -7.95, -31.31)
CIE-LCH	lch(61.38, 32.31, 255.75°)
OKLab	oklab(66.34% -0.0495 -0.0877)
OKLCH	oklch(66.34% 0.101 240.6)
XYZ	xyz(26.2431, 29.6834, 60.8348)
Luminance	0.2969 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#559BCB #CB8555

analogous

#55CBC0 #559BCB #5560CB

triadic

#559BCB #CB559B #9BCB55

tetradic

#559BCB #C055CB #CB8555 #60CB55

square

#559BCB #C055CB #CB8555 #60CB55

split-complementary

#559BCB #CB5560 #CBC055

monochromatic

#275B7F #357DAE #559BCB #84B7D9 #B3D2E8

Accessibility & contrast

On white

3.03

#559BCB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.94

#559BCB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #559BCB

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##559BCB	#FFFFFF	#000000	##000000
##559BCB	1.00	3.03	6.94	6.94
#FFFFFF	3.03	1.00	21.00	21.00
#000000	6.94	21.00	1.00	1.00
##000000	6.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#869BCD

Deuteranopia (green-blind)

#758FCA

Tritanopia (blue-blind)

#00A7AB

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #559bcb;
/* rgb */ color: rgb(85, 155, 203);
/* oklch */ color: oklch(66.3% 0.101 240.6);

Tailwind

colors: {
  custom: {
    50: '#8eb8db',
    500: '#559bcb',
    950: '#000000',
  },
}

SCSS

$custom: #559bcb;
$custom-light: #8eb8db;
$custom-dark: #000000;

JSON

{
  "hex": "#559bcb",
  "rgb": {
    "r": 85,
    "g": 155,
    "b": 203
  },
  "hsl": {
    "h": 204.407,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.66341,
    "c": 0.10072,
    "h": 240.6
  },
  "luminance": 0.29686
}

Semantic roles & 50–950 ramp

primary

#559BCB

secondary

#D6B9A6

accent

#864BDD

background

#F9FBFD

surface

#F1F6FB

border

#CBD0D4

text

#0D1115

muted

#7E8083

Preview Lab

Preview with #559BCB

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

Preview Lab → · Contrast checker → · Palette generator →