#51C3DC#51C3DC

#51C3DC is a light, moderate cyan. Relative luminance 0.459; OKLCH L 76.2% C 0.108 H 214.7°. Best body text is #000000 at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#51C3DC
RGB	rgb(81, 195, 220)
HSL	hsl(191, 67%, 59%)
HSV	hsv(191, 63%, 86%)
CMYK	cmyk(63.2%, 11.4%, 0%, 13.7%)
CIE-LAB	lab(73.51, -24.65, -22.05)
CIE-LCH	lch(73.51, 33.07, 221.81°)
OKLab	oklab(76.19% -0.0884 -0.0613)
OKLCH	oklch(76.19% 0.108 214.7)
XYZ	xyz(35.8214, 45.9431, 74.6763)
Luminance	0.4595 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3DC #DC6A51

analogous

#51DCAF #51C3DC #517EDC

triadic

#51C3DC #DC51C3 #C3DC51

tetradic

#51C3DC #AF51DC #DC6A51 #7EDC51

square

#51C3DC #AF51DC #DC6A51 #7EDC51

split-complementary

#51C3DC #DC517E #DCAF51

monochromatic

#1E7F95 #28ABC8 #51C3DC #84D5E6 #B7E6F0

Accessibility & contrast

On white

2.06

#51C3DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.19

#51C3DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3DC

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3DC	#FFFFFF	#000000	##000000
##51C3DC	1.00	2.06	10.19	10.19
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.19	21.00	1.00	1.00
##000000	10.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1BDDD

Deuteranopia (green-blind)

#9DAEDC

Tritanopia (blue-blind)

#00CCCB

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #51c3dc;
/* rgb */ color: rgb(81, 195, 220);
/* oklch */ color: oklch(76.2% 0.108 214.7);

Tailwind

colors: {
  custom: {
    50: '#90d5e7',
    500: '#51c3dc',
    950: '#000000',
  },
}

SCSS

$custom: #51c3dc;
$custom-light: #90d5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3dc",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 220
  },
  "hsl": {
    "h": 190.791,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.76191,
    "c": 0.1076,
    "h": 214.7
  },
  "luminance": 0.45947
}

Semantic roles & 50–950 ramp

primary

#51C3DC

secondary

#E0B3A9

accent

#5D3EE9

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C3DC

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

Preview Lab → · Contrast checker → · Palette generator →