#559CF0#559CF0

#559CF0 is a light, vivid cyan. Relative luminance 0.320; OKLCH L 68.4% C 0.144 H 254.0°. Best body text is #000000 at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#559CF0
RGB	rgb(85, 156, 240)
HSL	hsl(213, 84%, 64%)
HSV	hsv(213, 65%, 94%)
CMYK	cmyk(64.6%, 35%, 0%, 5.9%)
CIE-LAB	lab(63.34, 3.51, -48.76)
CIE-LCH	lch(63.34, 48.88, 274.12°)
OKLab	oklab(68.43% -0.0398 -0.1383)
OKLCH	oklch(68.43% 0.144 254)
XYZ	xyz(31.3572, 31.9964, 86.9446)
Luminance	0.3200 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#559CF0 #F0A955

analogous

#55EAF0 #559CF0 #5B55F0

triadic

#559CF0 #F0559C #9CF055

tetradic

#559CF0 #F055EA #F0A955 #55F05B

square

#559CF0 #F055EA #F0A955 #55F05B

split-complementary

#559CF0 #F05B55 #EAF055

monochromatic

#105EBA #1D7BEB #559CF0 #8DBDF5 #C5DDFA

Accessibility & contrast

On white

2.84

#559CF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.40

#559CF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #559CF0

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##559CF0	#FFFFFF	#000000	##000000
##559CF0	1.00	2.84	7.40	7.40
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.40	21.00	1.00	1.00
##000000	7.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#77A1F3

Deuteranopia (green-blind)

#6293EE

Tritanopia (blue-blind)

#00AFBB

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #559cf0;
/* rgb */ color: rgb(85, 156, 240);
/* oklch */ color: oklch(68.4% 0.144 254.0);

Tailwind

colors: {
  custom: {
    50: '#93b8f5',
    500: '#559cf0',
    950: '#000000',
  },
}

SCSS

$custom: #559cf0;
$custom-light: #93b8f5;
$custom-dark: #000000;

JSON

{
  "hex": "#559cf0",
  "rgb": {
    "r": 85,
    "g": 156,
    "b": 240
  },
  "hsl": {
    "h": 212.516,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.68433,
    "c": 0.14391,
    "h": 254
  },
  "luminance": 0.31999
}

Semantic roles & 50–950 ramp

primary

#559CF0

secondary

#ECD3B5

accent

#7C05E0

background

#F9FBFF

surface

#F2F6FE

border

#CCD0D6

text

#0E1117

muted

#7E8085

Preview Lab

Preview with #559CF0

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

Preview Lab → · Contrast checker → · Palette generator →