#51CCE5#51CCE5

#51CCE5 is a light, moderate cyan. Relative luminance 0.506; OKLCH L 78.6% C 0.113 H 213.6°. Best body text is #000000 at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#51CCE5
RGB	rgb(81, 204, 229)
HSL	hsl(190, 74%, 61%)
HSV	hsv(190, 65%, 90%)
CMYK	cmyk(64.6%, 10.9%, 0%, 10.2%)
CIE-LAB	lab(76.43, -26.46, -22.47)
CIE-LCH	lch(76.43, 34.71, 220.33°)
OKLab	oklab(78.64% -0.0941 -0.0624)
OKLCH	oklch(78.64% 0.113 213.6)
XYZ	xyz(39.1232, 50.5880, 81.8161)
Luminance	0.5059 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CCE5 #E56A51

analogous

#51E5B4 #51CCE5 #5182E5

triadic

#51CCE5 #E551CC #CCE551

tetradic

#51CCE5 #B451E5 #E56A51 #82E551

square

#51CCE5 #B451E5 #E56A51 #82E551

split-complementary

#51CCE5 #E55182 #E5B451

monochromatic

#188CA3 #20B9D8 #51CCE5 #86DCED #BBEBF5

Accessibility & contrast

On white

1.89

#51CCE5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.12

#51CCE5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CCE5

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CCE5	#FFFFFF	#000000	##000000
##51CCE5	1.00	1.89	11.12	11.12
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.12	21.00	1.00	1.00
##000000	11.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9C6E6

Deuteranopia (green-blind)

#A4B6E5

Tritanopia (blue-blind)

#00D6D4

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cce5;
/* rgb */ color: rgb(81, 204, 229);
/* oklch */ color: oklch(78.6% 0.113 213.6);

Tailwind

colors: {
  custom: {
    50: '#92dbed',
    500: '#51cce5',
    950: '#000000',
  },
}

SCSS

$custom: #51cce5;
$custom-light: #92dbed;
$custom-dark: #000000;

JSON

{
  "hex": "#51cce5",
  "rgb": {
    "r": 81,
    "g": 204,
    "b": 229
  },
  "hsl": {
    "h": 190.135,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.7864,
    "c": 0.11293,
    "h": 213.6
  },
  "luminance": 0.50592
}

Semantic roles & 50–950 ramp

primary

#51CCE5

secondary

#A64835

accent

#310FD6

background

#FCFEFE

surface

#F5FCFD

border

#CFD5D5

text

#0E1516

muted

#7F8484

Preview Lab

Preview with #51CCE5

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

Preview Lab → · Contrast checker → · Palette generator →