#51C3F2#51C3F2

#51C3F2 is a light, vivid cyan. Relative luminance 0.472; OKLCH L 77.1% C 0.122 H 228.8°. Best body text is #000000 at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#51C3F2
RGB	rgb(81, 195, 242)
HSL	hsl(198, 86%, 63%)
HSV	hsv(198, 67%, 95%)
CMYK	cmyk(66.5%, 19.4%, 0%, 5.1%)
CIE-LAB	lab(74.31, -17.94, -32.72)
CIE-LCH	lch(74.31, 37.31, 241.26°)
OKLab	oklab(77.1% -0.0803 -0.0916)
OKLCH	oklch(77.1% 0.122 228.8)
XYZ	xyz(38.9291, 47.1861, 91.0434)
Luminance	0.4719 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C3F2 #F28051

analogous

#51F2D1 #51C3F2 #5172F2

triadic

#51C3F2 #F251C3 #C3F251

tetradic

#51C3F2 #D151F2 #F28051 #72F251

square

#51C3F2 #D151F2 #F28051 #72F251

split-complementary

#51C3F2 #F25172 #F2D151

monochromatic

#0E88BB #18AFEE #51C3F2 #8AD7F6 #C3EAFB

Accessibility & contrast

On white

2.01

#51C3F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.44

#51C3F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3F2

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C3F2	#FFFFFF	#000000	##000000
##51C3F2	1.00	2.01	10.44	10.44
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.44	21.00	1.00	1.00
##000000	10.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABC0F4

Deuteranopia (green-blind)

#94B0F1

Tritanopia (blue-blind)

#00D0D2

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #51c3f2;
/* rgb */ color: rgb(81, 195, 242);
/* oklch */ color: oklch(77.1% 0.122 228.8);

Tailwind

colors: {
  custom: {
    50: '#93d5f6',
    500: '#51c3f2',
    950: '#000000',
  },
}

SCSS

$custom: #51c3f2;
$custom-light: #93d5f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51c3f2",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 242
  },
  "hsl": {
    "h": 197.516,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.77097,
    "c": 0.12179,
    "h": 228.8
  },
  "luminance": 0.4719
}

Semantic roles & 50–950 ramp

primary

#51C3F2

secondary

#ECC3B3

accent

#4403E3

background

#F9FDFF

surface

#F2FAFE

border

#CCD3D6

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C3F2

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

Preview Lab → · Contrast checker → · Palette generator →