#51C2E7#51C2E7

#51C2E7 is a light, moderate cyan. Relative luminance 0.461; OKLCH L 76.4% C 0.114 H 223.0°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#51C2E7
RGB	rgb(81, 194, 231)
HSL	hsl(195, 76%, 61%)
HSV	hsv(195, 65%, 91%)
CMYK	cmyk(64.9%, 16%, 0%, 9.4%)
CIE-LAB	lab(73.61, -20.83, -27.85)
CIE-LCH	lch(73.61, 34.78, 233.21°)
OKLab	oklab(76.4% -0.0832 -0.0777)
OKLCH	oklch(76.4% 0.114 223)
XYZ	xyz(37.1031, 46.0984, 82.5283)
Luminance	0.4610 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C2E7 #E77651

analogous

#51E7C1 #51C2E7 #5177E7

triadic

#51C2E7 #E751C2 #C2E751

tetradic

#51C2E7 #C151E7 #E77651 #77E751

square

#51C2E7 #C151E7 #E77651 #77E751

split-complementary

#51C2E7 #E75177 #E7C151

monochromatic

#1783A7 #1EAEDC #51C2E7 #87D5EE #BDE8F6

Accessibility & contrast

On white

2.05

#51C2E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.22

#51C2E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2E7

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C2E7	#FFFFFF	#000000	##000000
##51C2E7	1.00	2.05	10.22	10.22
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.22	21.00	1.00	1.00
##000000	10.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBEE9

Deuteranopia (green-blind)

#98AEE7

Tritanopia (blue-blind)

#00CDCE

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #51c2e7;
/* rgb */ color: rgb(81, 194, 231);
/* oklch */ color: oklch(76.4% 0.114 223.0);

Tailwind

colors: {
  custom: {
    50: '#91d4ee',
    500: '#51c2e7',
    950: '#000000',
  },
}

SCSS

$custom: #51c2e7;
$custom-light: #91d4ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51c2e7",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 231
  },
  "hsl": {
    "h": 194.8,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.76401,
    "c": 0.11388,
    "h": 223
  },
  "luminance": 0.46102
}

Semantic roles & 50–950 ramp

primary

#51C2E7

secondary

#E6BCAE

accent

#3F0ED8

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C2E7

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

Preview Lab → · Contrast checker → · Palette generator →