#51C8EB#51C8EB

#51C8EB is a light, moderate cyan. Relative luminance 0.491; OKLCH L 78.0% C 0.116 H 220.8°. Best body text is #000000 at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#51C8EB
RGB	rgb(81, 200, 235)
HSL	hsl(194, 79%, 62%)
HSV	hsv(194, 66%, 92%)
CMYK	cmyk(65.5%, 14.9%, 0%, 7.8%)
CIE-LAB	lab(75.48, -22.66, -27.14)
CIE-LCH	lch(75.48, 35.36, 230.13°)
OKLab	oklab(77.95% -0.0878 -0.0757)
OKLCH	oklch(77.95% 0.116 220.8)
XYZ	xyz(39.0369, 49.0518, 85.9918)
Luminance	0.4906 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C8EB #EB7451

analogous

#51EBC1 #51C8EB #517BEB

triadic

#51C8EB #EB51C8 #C8EB51

tetradic

#51C8EB #C151EB #EB7451 #7BEB51

square

#51C8EB #C151EB #EB7451 #7BEB51

split-complementary

#51C8EB #EB517B #EBC151

monochromatic

#148BAE #1AB7E5 #51C8EB #88D9F1 #BFEBF8

Accessibility & contrast

On white

1.94

#51C8EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.81

#51C8EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C8EB

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C8EB	#FFFFFF	#000000	##000000
##51C8EB	1.00	1.94	10.81	10.81
#FFFFFF	1.94	1.00	21.00	21.00
#000000	10.81	21.00	1.00	1.00
##000000	10.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C3ED

Deuteranopia (green-blind)

#9DB3EB

Tritanopia (blue-blind)

#00D3D3

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #51c8eb;
/* rgb */ color: rgb(81, 200, 235);
/* oklch */ color: oklch(78.0% 0.116 220.8);

Tailwind

colors: {
  custom: {
    50: '#92d9f1',
    500: '#51c8eb',
    950: '#000000',
  },
}

SCSS

$custom: #51c8eb;
$custom-light: #92d9f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51c8eb",
  "rgb": {
    "r": 81,
    "g": 200,
    "b": 235
  },
  "hsl": {
    "h": 193.636,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.7795,
    "c": 0.1159,
    "h": 220.8
  },
  "luminance": 0.49056
}

Semantic roles & 50–950 ramp

primary

#51C8EB

secondary

#E8BCB0

accent

#3A0ADC

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C8EB

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

Preview Lab → · Contrast checker → · Palette generator →