#51CDE6#51CDE6

#51CDE6 is a light, moderate cyan. Relative luminance 0.511; OKLCH L 78.9% C 0.114 H 213.4°. Best body text is #000000 at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#51CDE6
RGB	rgb(81, 205, 230)
HSL	hsl(190, 75%, 61%)
HSV	hsv(190, 65%, 90%)
CMYK	cmyk(64.8%, 10.9%, 0%, 9.8%)
CIE-LAB	lab(76.75, -26.66, -22.51)
CIE-LCH	lch(76.75, 34.89, 220.18°)
OKLab	oklab(78.91% -0.0947 -0.0626)
OKLCH	oklch(78.91% 0.114 213.4)
XYZ	xyz(39.5016, 51.1208, 82.6331)
Luminance	0.5112 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CDE6 #E66A51

analogous

#51E6B4 #51CDE6 #5182E6

triadic

#51CDE6 #E651CD #CDE651

tetradic

#51CDE6 #B451E6 #E66A51 #82E651

square

#51CDE6 #B451E6 #E66A51 #82E651

split-complementary

#51CDE6 #E65182 #E6B451

monochromatic

#188DA5 #1FBBDA #51CDE6 #87DCEE #BCECF5

Accessibility & contrast

On white

1.87

#51CDE6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.23

#51CDE6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CDE6

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CDE6	#FFFFFF	#000000	##000000
##51CDE6	1.00	1.87	11.23	11.23
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.23	21.00	1.00	1.00
##000000	11.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAC7E7

Deuteranopia (green-blind)

#A5B7E6

Tritanopia (blue-blind)

#00D7D5

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cde6;
/* rgb */ color: rgb(81, 205, 230);
/* oklch */ color: oklch(78.9% 0.114 213.4);

Tailwind

colors: {
  custom: {
    50: '#92dcee',
    500: '#51cde6',
    950: '#000000',
  },
}

SCSS

$custom: #51cde6;
$custom-light: #92dcee;
$custom-dark: #000000;

JSON

{
  "hex": "#51cde6",
  "rgb": {
    "r": 81,
    "g": 205,
    "b": 230
  },
  "hsl": {
    "h": 190.067,
    "s": 74.874,
    "l": 60.98
  },
  "oklch": {
    "l": 0.78911,
    "c": 0.11352,
    "h": 213.4
  },
  "luminance": 0.51125
}

Semantic roles & 50–950 ramp

primary

#51CDE6

secondary

#A74734

accent

#300ED7

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CDE6

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

Preview Lab → · Contrast checker → · Palette generator →