#51C2DA#51C2DA

#51C2DA is a light, moderate cyan. Relative luminance 0.454; OKLCH L 75.9% C 0.107 H 214.1°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#51C2DA
RGB	rgb(81, 194, 218)
HSL	hsl(191, 65%, 59%)
HSV	hsv(191, 63%, 85%)
CMYK	cmyk(62.8%, 11%, 0%, 14.5%)
CIE-LAB	lab(73.15, -24.74, -21.51)
CIE-LCH	lch(73.15, 32.79, 221.01°)
OKLab	oklab(75.88% -0.0882 -0.0598)
OKLCH	oklch(75.88% 0.107 214.1)
XYZ	xyz(35.3348, 45.3911, 73.2152)
Luminance	0.4540 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2DA #DA6951

analogous

#51DAAD #51C2DA #517DDA

triadic

#51C2DA #DA51C2 #C2DA51

tetradic

#51C2DA #AD51DA #DA6951 #7DDA51

square

#51C2DA #AD51DA #DA6951 #7DDA51

split-complementary

#51C2DA #DA517D #DAAD51

monochromatic

#1F7E92 #2AA9C4 #51C2DA #83D4E5 #B6E5EF

Accessibility & contrast

On white

2.08

#51C2DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#51C2DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2DA

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2DA	#FFFFFF	#000000	##000000
##51C2DA	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0BCDB

Deuteranopia (green-blind)

#9CADDA

Tritanopia (blue-blind)

#00CBC9

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #51c2da;
/* rgb */ color: rgb(81, 194, 218);
/* oklch */ color: oklch(75.9% 0.107 214.1);

Tailwind

colors: {
  custom: {
    50: '#90d4e5',
    500: '#51c2da',
    950: '#000000',
  },
}

SCSS

$custom: #51c2da;
$custom-light: #90d4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2da",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 218
  },
  "hsl": {
    "h": 190.511,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.75879,
    "c": 0.10655,
    "h": 214.1
  },
  "luminance": 0.45395
}

Semantic roles & 50–950 ramp

primary

#51C2DA

secondary

#DEB2A8

accent

#5D40E8

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C2DA

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

Preview Lab → · Contrast checker → · Palette generator →