#51CFE9#51CFE9

#51CFE9 is a light, moderate cyan. Relative luminance 0.523; OKLCH L 79.5% C 0.115 H 213.9°. Best body text is #000000 at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#51CFE9
RGB	rgb(81, 207, 233)
HSL	hsl(190, 78%, 62%)
HSV	hsv(190, 65%, 91%)
CMYK	cmyk(65.2%, 11.2%, 0%, 8.6%)
CIE-LAB	lab(77.43, -26.76, -23.09)
CIE-LCH	lch(77.43, 35.34, 220.78°)
OKLab	oklab(79.49% -0.0956 -0.0642)
OKLCH	oklch(79.49% 0.115 213.9)
XYZ	xyz(40.4080, 52.2538, 85.0314)
Luminance	0.5226 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CFE9 #E96B51

analogous

#51E9B7 #51CFE9 #5183E9

triadic

#51CFE9 #E951CF #CFE951

tetradic

#51CFE9 #B751E9 #E96B51 #83E951

square

#51CFE9 #B751E9 #E96B51 #83E951

split-complementary

#51CFE9 #E95183 #E9B751

monochromatic

#1691AA #1CBFE0 #51CFE9 #87DEF0 #BEEDF7

Accessibility & contrast

On white

1.83

#51CFE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.45

#51CFE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CFE9

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CFE9	#FFFFFF	#000000	##000000
##51CFE9	1.00	1.83	11.45	11.45
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.45	21.00	1.00	1.00
##000000	11.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCC9EB

Deuteranopia (green-blind)

#A6B8E9

Tritanopia (blue-blind)

#00D9D7

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #51cfe9;
/* rgb */ color: rgb(81, 207, 233);
/* oklch */ color: oklch(79.5% 0.115 213.9);

Tailwind

colors: {
  custom: {
    50: '#93def0',
    500: '#51cfe9',
    950: '#000000',
  },
}

SCSS

$custom: #51cfe9;
$custom-light: #93def0;
$custom-dark: #000000;

JSON

{
  "hex": "#51cfe9",
  "rgb": {
    "r": 81,
    "g": 207,
    "b": 233
  },
  "hsl": {
    "h": 190.263,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.79492,
    "c": 0.11512,
    "h": 213.9
  },
  "luminance": 0.52258
}

Semantic roles & 50–950 ramp

primary

#51CFE9

secondary

#AB4733

accent

#2F0CDA

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CFE9

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

Preview Lab → · Contrast checker → · Palette generator →