#51C6E2#51C6E2

#51C6E2 is a light, moderate cyan. Relative luminance 0.476; OKLCH L 77.1% C 0.111 H 216.4°. Best body text is #000000 at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#51C6E2
RGB	rgb(81, 198, 226)
HSL	hsl(192, 71%, 60%)
HSV	hsv(192, 64%, 89%)
CMYK	cmyk(64.2%, 12.4%, 0%, 11.4%)
CIE-LAB	lab(74.59, -24.37, -23.65)
CIE-LCH	lch(74.59, 33.96, 224.15°)
OKLab	oklab(77.13% -0.0892 -0.0658)
OKLCH	oklch(77.13% 0.111 216.4)
XYZ	xyz(37.3093, 47.6245, 79.1629)
Luminance	0.4763 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C6E2 #E26D51

analogous

#51E2B5 #51C6E2 #517EE2

triadic

#51C6E2 #E251C6 #C6E251

tetradic

#51C6E2 #B551E2 #E26D51 #7EE251

square

#51C6E2 #B551E2 #E26D51 #7EE251

split-complementary

#51C6E2 #E2517E #E2B551

monochromatic

#1A859E #23B1D3 #51C6E2 #85D7EB #BAE8F3

Accessibility & contrast

On white

2.00

#51C6E2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.53

#51C6E2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C6E2

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C6E2	#FFFFFF	#000000	##000000
##51C6E2	1.00	2.00	10.53	10.53
#FFFFFF	2.00	1.00	21.00	21.00
#000000	10.53	21.00	1.00	1.00
##000000	10.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C0E4

Deuteranopia (green-blind)

#9EB1E2

Tritanopia (blue-blind)

#00D0CF

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #51c6e2;
/* rgb */ color: rgb(81, 198, 226);
/* oklch */ color: oklch(77.1% 0.111 216.4);

Tailwind

colors: {
  custom: {
    50: '#91d7eb',
    500: '#51c6e2',
    950: '#000000',
  },
}

SCSS

$custom: #51c6e2;
$custom-light: #91d7eb;
$custom-dark: #000000;

JSON

{
  "hex": "#51c6e2",
  "rgb": {
    "r": 81,
    "g": 198,
    "b": 226
  },
  "hsl": {
    "h": 191.586,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.77126,
    "c": 0.11084,
    "h": 216.4
  },
  "luminance": 0.47628
}

Semantic roles & 50–950 ramp

primary

#51C6E2

secondary

#E3B6AC

accent

#3712D3

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C6E2

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

Preview Lab → · Contrast checker → · Palette generator →