#51C0E2#51C0E2

#51C0E2 is a light, moderate cyan. Relative luminance 0.449; OKLCH L 75.7% C 0.111 H 221.4°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#51C0E2
RGB	rgb(81, 192, 226)
HSL	hsl(194, 71%, 60%)
HSV	hsv(194, 64%, 89%)
CMYK	cmyk(64.2%, 15%, 0%, 11.4%)
CIE-LAB	lab(72.85, -21.33, -26.31)
CIE-LCH	lch(72.85, 33.87, 230.97°)
OKLab	oklab(75.73% -0.0831 -0.0733)
OKLCH	oklch(75.73% 0.111 221.4)
XYZ	xyz(35.9649, 44.9358, 78.7148)
Luminance	0.4494 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C0E2 #E27351

analogous

#51E2BC #51C0E2 #5177E2

triadic

#51C0E2 #E251C0 #C0E251

tetradic

#51C0E2 #BC51E2 #E27351 #77E251

square

#51C0E2 #BC51E2 #E27351 #77E251

split-complementary

#51C0E2 #E25177 #E2BC51

monochromatic

#1A7F9E #23AAD3 #51C0E2 #85D3EB #BAE6F3

Accessibility & contrast

On white

2.10

#51C0E2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#51C0E2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C0E2

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C0E2	#FFFFFF	#000000	##000000
##51C0E2	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ACBBE4

Deuteranopia (green-blind)

#97ACE2

Tritanopia (blue-blind)

#00CBCB

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #51c0e2;
/* rgb */ color: rgb(81, 192, 226);
/* oklch */ color: oklch(75.7% 0.111 221.4);

Tailwind

colors: {
  custom: {
    50: '#91d3eb',
    500: '#51c0e2',
    950: '#000000',
  },
}

SCSS

$custom: #51c0e2;
$custom-light: #91d3eb;
$custom-dark: #000000;

JSON

{
  "hex": "#51c0e2",
  "rgb": {
    "r": 81,
    "g": 192,
    "b": 226
  },
  "hsl": {
    "h": 194.069,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.75733,
    "c": 0.11082,
    "h": 221.4
  },
  "luminance": 0.4494
}

Semantic roles & 50–950 ramp

primary

#51C0E2

secondary

#E3B9AC

accent

#3F12D3

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0E1416

muted

#7E8284

Preview Lab

Preview with #51C0E2

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

Preview Lab → · Contrast checker → · Palette generator →