#51C7EB#51C7EB

#51C7EB is a light, moderate cyan. Relative luminance 0.486; OKLCH L 77.7% C 0.116 H 221.5°. Best body text is #000000 at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#51C7EB
RGB	rgb(81, 199, 235)
HSL	hsl(194, 79%, 62%)
HSV	hsv(194, 66%, 92%)
CMYK	cmyk(65.5%, 15.3%, 0%, 7.8%)
CIE-LAB	lab(75.20, -22.16, -27.58)
CIE-LCH	lch(75.20, 35.38, 231.22°)
OKLab	oklab(77.72% -0.0868 -0.0769)
OKLCH	oklch(77.72% 0.116 221.5)
XYZ	xyz(38.8061, 48.5901, 85.9148)
Luminance	0.4859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C7EB #EB7551

analogous

#51EBC2 #51C7EB #517AEB

triadic

#51C7EB #EB51C7 #C7EB51

tetradic

#51C7EB #C251EB #EB7551 #7AEB51

square

#51C7EB #C251EB #EB7551 #7AEB51

split-complementary

#51C7EB #EB517A #EBC251

monochromatic

#148AAE #1AB5E5 #51C7EB #88D9F1 #BFEAF8

Accessibility & contrast

On white

1.96

#51C7EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.72

#51C7EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C7EB

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C7EB	#FFFFFF	#000000	##000000
##51C7EB	1.00	1.96	10.72	10.72
#FFFFFF	1.96	1.00	21.00	21.00
#000000	10.72	21.00	1.00	1.00
##000000	10.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C2ED

Deuteranopia (green-blind)

#9CB2EB

Tritanopia (blue-blind)

#00D2D2

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c7eb;
/* rgb */ color: rgb(81, 199, 235);
/* oklch */ color: oklch(77.7% 0.116 221.5);

Tailwind

colors: {
  custom: {
    50: '#92d8f1',
    500: '#51c7eb',
    950: '#000000',
  },
}

SCSS

$custom: #51c7eb;
$custom-light: #92d8f1;
$custom-dark: #000000;

JSON

{
  "hex": "#51c7eb",
  "rgb": {
    "r": 81,
    "g": 199,
    "b": 235
  },
  "hsl": {
    "h": 194.026,
    "s": 79.381,
    "l": 61.961
  },
  "oklch": {
    "l": 0.7772,
    "c": 0.11597,
    "h": 221.5
  },
  "luminance": 0.48594
}

Semantic roles & 50–950 ramp

primary

#51C7EB

secondary

#E8BDB0

accent

#3B0ADC

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C7EB

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

Preview Lab → · Contrast checker → · Palette generator →