#51C1DC#51C1DC

#51C1DC is a light, moderate cyan. Relative luminance 0.451; OKLCH L 75.7% C 0.107 H 216.4°. Best body text is #000000 at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#51C1DC
RGB	rgb(81, 193, 220)
HSL	hsl(192, 67%, 59%)
HSV	hsv(192, 63%, 86%)
CMYK	cmyk(63.2%, 12.3%, 0%, 13.7%)
CIE-LAB	lab(72.93, -23.64, -22.94)
CIE-LCH	lch(72.93, 32.94, 224.13°)
OKLab	oklab(75.72% -0.0864 -0.0638)
OKLCH	oklch(75.72% 0.107 216.4)
XYZ	xyz(35.3763, 45.0528, 74.5280)
Luminance	0.4506 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C1DC #DC6C51

analogous

#51DCB2 #51C1DC #517CDC

triadic

#51C1DC #DC51C1 #C1DC51

tetradic

#51C1DC #B251DC #DC6C51 #7CDC51

square

#51C1DC #B251DC #DC6C51 #7CDC51

split-complementary

#51C1DC #DC517C #DCB251

monochromatic

#1E7E95 #28A9C8 #51C1DC #84D3E6 #B7E5F0

Accessibility & contrast

On white

2.10

#51C1DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.01

#51C1DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C1DC

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C1DC	#FFFFFF	#000000	##000000
##51C1DC	1.00	2.10	10.01	10.01
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.01	21.00	1.00	1.00
##000000	10.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBBDE

Deuteranopia (green-blind)

#9BADDC

Tritanopia (blue-blind)

#00CBC9

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51c1dc;
/* rgb */ color: rgb(81, 193, 220);
/* oklch */ color: oklch(75.7% 0.107 216.4);

Tailwind

colors: {
  custom: {
    50: '#90d4e7',
    500: '#51c1dc',
    950: '#000000',
  },
}

SCSS

$custom: #51c1dc;
$custom-light: #90d4e7;
$custom-dark: #000000;

JSON

{
  "hex": "#51c1dc",
  "rgb": {
    "r": 81,
    "g": 193,
    "b": 220
  },
  "hsl": {
    "h": 191.655,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.75724,
    "c": 0.10739,
    "h": 216.4
  },
  "luminance": 0.45057
}

Semantic roles & 50–950 ramp

primary

#51C1DC

secondary

#E0B4A9

accent

#603EE9

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C1DC

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

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