#51ADF2#51ADF2

#51ADF2 is a light, vivid cyan. Relative luminance 0.380; OKLCH L 72.1% C 0.133 H 243.9°. Best body text is #000000 at 8.61:1 contrast (WCAG AA passes).

Color values

HEX	#51ADF2
RGB	rgb(81, 173, 242)
HSL	hsl(206, 86%, 63%)
HSV	hsv(206, 67%, 95%)
CMYK	cmyk(66.5%, 28.5%, 0%, 5.1%)
CIE-LAB	lab(68.05, -6.12, -42.44)
CIE-LCH	lch(68.05, 42.88, 261.80°)
OKLab	oklab(72.13% -0.0586 -0.1198)
OKLCH	oklch(72.13% 0.133 243.9)
XYZ	xyz(34.3578, 38.0437, 89.5196)
Luminance	0.3805 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ADF2 #F29651

analogous

#51F2E6 #51ADF2 #515CF2

triadic

#51ADF2 #F251AD #ADF251

tetradic

#51ADF2 #E651F2 #F29651 #5CF251

square

#51ADF2 #E651F2 #F29651 #5CF251

split-complementary

#51ADF2 #F2515C #F2E651

monochromatic

#0E71BB #1892EE #51ADF2 #8AC8F6 #C3E3FB

Accessibility & contrast

On white

2.44

#51ADF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.61

#51ADF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ADF2

8.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ADF2	#FFFFFF	#000000	##000000
##51ADF2	1.00	2.44	8.61	8.61
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.61	21.00	1.00	1.00
##000000	8.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EAFF5

Deuteranopia (green-blind)

#789FF1

Tritanopia (blue-blind)

#00BEC5

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51adf2;
/* rgb */ color: rgb(81, 173, 242);
/* oklch */ color: oklch(72.1% 0.133 243.9);

Tailwind

colors: {
  custom: {
    50: '#92c5f6',
    500: '#51adf2',
    950: '#000000',
  },
}

SCSS

$custom: #51adf2;
$custom-light: #92c5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51adf2",
  "rgb": {
    "r": 81,
    "g": 173,
    "b": 242
  },
  "hsl": {
    "h": 205.714,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.72128,
    "c": 0.13337,
    "h": 243.9
  },
  "luminance": 0.38047
}

Semantic roles & 50–950 ramp

primary

#51ADF2

secondary

#ECCBB3

accent

#6303E3

background

#F9FCFF

surface

#F2F8FE

border

#CCD1D6

text

#0E1217

muted

#7E8185

Preview Lab

Preview with #51ADF2

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

Preview Lab → · Contrast checker → · Palette generator →