#51C0DC#51C0DC

#51C0DC is a light, moderate cyan. Relative luminance 0.446; OKLCH L 75.5% C 0.107 H 217.3°. Best body text is #000000 at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#51C0DC
RGB	rgb(81, 192, 220)
HSL	hsl(192, 67%, 59%)
HSV	hsv(192, 63%, 86%)
CMYK	cmyk(63.2%, 12.7%, 0%, 13.7%)
CIE-LAB	lab(72.64, -23.14, -23.38)
CIE-LCH	lch(72.64, 32.89, 225.30°)
OKLab	oklab(75.49% -0.0854 -0.065)
OKLCH	oklch(75.49% 0.107 217.3)
XYZ	xyz(35.1560, 44.6122, 74.4545)
Luminance	0.4462 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C0DC #DC6D51

analogous

#51DCB2 #51C0DC #517BDC

triadic

#51C0DC #DC51C0 #C0DC51

tetradic

#51C0DC #B251DC #DC6D51 #7BDC51

square

#51C0DC #B251DC #DC6D51 #7BDC51

split-complementary

#51C0DC #DC517B #DCB251

monochromatic

#1E7D95 #28A8C8 #51C0DC #84D2E6 #B7E5F0

Accessibility & contrast

On white

2.12

#51C0DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.92

#51C0DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C0DC

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C0DC	#FFFFFF	#000000	##000000
##51C0DC	1.00	2.12	9.92	9.92
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.92	21.00	1.00	1.00
##000000	9.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEBBDE

Deuteranopia (green-blind)

#99ACDC

Tritanopia (blue-blind)

#00CAC9

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #51c0dc;
/* rgb */ color: rgb(81, 192, 220);
/* oklch */ color: oklch(75.5% 0.107 217.3);

Tailwind

colors: {
  custom: {
    50: '#90d3e7',
    500: '#51c0dc',
    950: '#000000',
  },
}

SCSS

$custom: #51c0dc;
$custom-light: #90d3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51c0dc",
  "rgb": {
    "r": 81,
    "g": 192,
    "b": 220
  },
  "hsl": {
    "h": 192.086,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.7549,
    "c": 0.10732,
    "h": 217.3
  },
  "luminance": 0.44616
}

Semantic roles & 50–950 ramp

primary

#51C0DC

secondary

#E0B4A9

accent

#613EE9

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51C0DC

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

Preview Lab → · Contrast checker → · Palette generator →