#51C4E7#51C4E7

#51C4E7 is a light, moderate cyan. Relative luminance 0.470; OKLCH L 76.9% C 0.114 H 221.4°. Best body text is #000000 at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#51C4E7
RGB	rgb(81, 196, 231)
HSL	hsl(194, 76%, 61%)
HSV	hsv(194, 65%, 91%)
CMYK	cmyk(64.9%, 15.2%, 0%, 9.4%)
CIE-LAB	lab(74.19, -21.85, -26.97)
CIE-LCH	lch(74.19, 34.71, 230.99°)
OKLab	oklab(76.86% -0.0853 -0.0752)
OKLCH	oklch(76.86% 0.114 221.4)
XYZ	xyz(37.5512, 46.9947, 82.6777)
Luminance	0.4700 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C4E7 #E77451

analogous

#51E7BF #51C4E7 #5179E7

triadic

#51C4E7 #E751C4 #C4E751

tetradic

#51C4E7 #BF51E7 #E77451 #79E751

square

#51C4E7 #BF51E7 #E77451 #79E751

split-complementary

#51C4E7 #E75179 #E7BF51

monochromatic

#1785A7 #1EB0DC #51C4E7 #87D6EE #BDE8F6

Accessibility & contrast

On white

2.02

#51C4E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.40

#51C4E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C4E7

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C4E7	#FFFFFF	#000000	##000000
##51C4E7	1.00	2.02	10.40	10.40
#FFFFFF	2.02	1.00	21.00	21.00
#000000	10.40	21.00	1.00	1.00
##000000	10.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBFE9

Deuteranopia (green-blind)

#9AB0E7

Tritanopia (blue-blind)

#00CFCF

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c4e7;
/* rgb */ color: rgb(81, 196, 231);
/* oklch */ color: oklch(76.9% 0.114 221.4);

Tailwind

colors: {
  custom: {
    50: '#91d6ee',
    500: '#51c4e7',
    950: '#000000',
  },
}

SCSS

$custom: #51c4e7;
$custom-light: #91d6ee;
$custom-dark: #000000;

JSON

{
  "hex": "#51c4e7",
  "rgb": {
    "r": 81,
    "g": 196,
    "b": 231
  },
  "hsl": {
    "h": 194,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.76863,
    "c": 0.11369,
    "h": 221.4
  },
  "luminance": 0.46999
}

Semantic roles & 50–950 ramp

primary

#51C4E7

secondary

#E6BBAE

accent

#3D0ED8

background

#F9FDFE

surface

#F2FAFD

border

#CCD3D5

text

#0E1416

muted

#7E8384

Preview Lab

Preview with #51C4E7

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

Preview Lab → · Contrast checker → · Palette generator →