#51C6ED#51C6ED

#51C6ED is a light, moderate cyan. Relative luminance 0.483; OKLCH L 77.6% C 0.117 H 223.6°. Best body text is #000000 at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#51C6ED
RGB	rgb(81, 198, 237)
HSL	hsl(195, 81%, 62%)
HSV	hsv(195, 66%, 93%)
CMYK	cmyk(65.8%, 16.5%, 0%, 7.1%)
CIE-LAB	lab(74.98, -21.04, -28.99)
CIE-LCH	lch(74.98, 35.81, 234.03°)
OKLab	oklab(77.57% -0.085 -0.0809)
OKLCH	oklch(77.57% 0.117 223.6)
XYZ	xyz(38.8673, 48.2477, 87.3687)
Luminance	0.4825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C6ED #ED7851

analogous

#51EDC6 #51C6ED #5178ED

triadic

#51C6ED #ED51C6 #C6ED51

tetradic

#51C6ED #C651ED #ED7851 #78ED51

square

#51C6ED #C651ED #ED7851 #78ED51

split-complementary

#51C6ED #ED5178 #EDC651

monochromatic

#128AB1 #1AB4E7 #51C6ED #88D8F3 #C0EAF8

Accessibility & contrast

On white

1.97

#51C6ED on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.65

#51C6ED on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C6ED

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C6ED	#FFFFFF	#000000	##000000
##51C6ED	1.00	1.97	10.65	10.65
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.65	21.00	1.00	1.00
##000000	10.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C2EF

Deuteranopia (green-blind)

#9AB2ED

Tritanopia (blue-blind)

#00D2D3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c6ed;
/* rgb */ color: rgb(81, 198, 237);
/* oklch */ color: oklch(77.6% 0.117 223.6);

Tailwind

colors: {
  custom: {
    50: '#92d7f3',
    500: '#51c6ed',
    950: '#000000',
  },
}

SCSS

$custom: #51c6ed;
$custom-light: #92d7f3;
$custom-dark: #000000;

JSON

{
  "hex": "#51c6ed",
  "rgb": {
    "r": 81,
    "g": 198,
    "b": 237
  },
  "hsl": {
    "h": 195,
    "s": 81.25,
    "l": 62.353
  },
  "oklch": {
    "l": 0.77572,
    "c": 0.1174,
    "h": 223.6
  },
  "luminance": 0.48252
}

Semantic roles & 50–950 ramp

primary

#51C6ED

secondary

#E9BFB0

accent

#3D08DE

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C6ED

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

Preview Lab → · Contrast checker → · Palette generator →