#51CAE9#51CAE9

#51CAE9 is a light, moderate cyan. Relative luminance 0.499; OKLCH L 78.3% C 0.115 H 217.9°. Best body text is #000000 at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#51CAE9
RGB	rgb(81, 202, 233)
HSL	hsl(192, 78%, 62%)
HSV	hsv(192, 65%, 91%)
CMYK	cmyk(65.2%, 13.3%, 0%, 8.6%)
CIE-LAB	lab(75.99, -24.27, -25.29)
CIE-LCH	lch(75.99, 35.05, 226.17°)
OKLab	oklab(78.33% -0.0905 -0.0704)
OKLCH	oklch(78.33% 0.115 217.9)
XYZ	xyz(39.2158, 49.8693, 84.6340)
Luminance	0.4987 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CAE9 #E97051

analogous

#51E9BC #51CAE9 #517EE9

triadic

#51CAE9 #E951CA #CAE951

tetradic

#51CAE9 #BC51E9 #E97051 #7EE951

square

#51CAE9 #BC51E9 #E97051 #7EE951

split-complementary

#51CAE9 #E9517E #E9BC51

monochromatic

#168CAA #1CB8E0 #51CAE9 #87DBF0 #BEEBF7

Accessibility & contrast

On white

1.91

#51CAE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.97

#51CAE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CAE9

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CAE9	#FFFFFF	#000000	##000000
##51CAE9	1.00	1.91	10.97	10.97
#FFFFFF	1.91	1.00	21.00	21.00
#000000	10.97	21.00	1.00	1.00
##000000	10.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6C4EB

Deuteranopia (green-blind)

#A0B4E9

Tritanopia (blue-blind)

#00D5D4

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #51cae9;
/* rgb */ color: rgb(81, 202, 233);
/* oklch */ color: oklch(78.3% 0.115 217.9);

Tailwind

colors: {
  custom: {
    50: '#92daf0',
    500: '#51cae9',
    950: '#000000',
  },
}

SCSS

$custom: #51cae9;
$custom-light: #92daf0;
$custom-dark: #000000;

JSON

{
  "hex": "#51cae9",
  "rgb": {
    "r": 81,
    "g": 202,
    "b": 233
  },
  "hsl": {
    "h": 192.237,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.78332,
    "c": 0.11471,
    "h": 217.9
  },
  "luminance": 0.49874
}

Semantic roles & 50–950 ramp

primary

#51CAE9

secondary

#E7BAAF

accent

#360CDA

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1516

muted

#7E8384

Preview Lab

Preview with #51CAE9

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

Preview Lab → · Contrast checker → · Palette generator →