#51D2F2#51D2F2

#51D2F2 is a light, moderate cyan. Relative luminance 0.543; OKLCH L 80.5% C 0.120 H 217.4°. Best body text is #000000 at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#51D2F2
RGB	rgb(81, 210, 242)
HSL	hsl(192, 86%, 63%)
HSV	hsv(192, 67%, 95%)
CMYK	cmyk(66.5%, 13.2%, 0%, 5.1%)
CIE-LAB	lab(78.61, -25.56, -26.11)
CIE-LCH	lch(78.61, 36.54, 225.61°)
OKLab	oklab(80.54% -0.0951 -0.0727)
OKLCH	oklch(80.54% 0.12 217.4)
XYZ	xyz(42.4603, 54.2486, 92.2205)
Luminance	0.5425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D2F2 #F27151

analogous

#51F2C1 #51D2F2 #5182F2

triadic

#51D2F2 #F251D2 #D2F251

tetradic

#51D2F2 #C151F2 #F27151 #82F251

square

#51D2F2 #C151F2 #F27151 #82F251

split-complementary

#51D2F2 #F25182 #F2C151

monochromatic

#0E98BB #18C3EE #51D2F2 #8AE1F6 #C3EFFB

Accessibility & contrast

On white

1.77

#51D2F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.85

#51D2F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D2F2

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D2F2	#FFFFFF	#000000	##000000
##51D2F2	1.00	1.77	11.85	11.85
#FFFFFF	1.77	1.00	21.00	21.00
#000000	11.85	21.00	1.00	1.00
##000000	11.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCCF4

Deuteranopia (green-blind)

#A6BBF2

Tritanopia (blue-blind)

#00DDDC

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51d2f2;
/* rgb */ color: rgb(81, 210, 242);
/* oklch */ color: oklch(80.5% 0.120 217.4);

Tailwind

colors: {
  custom: {
    50: '#94e0f6',
    500: '#51d2f2',
    950: '#000000',
  },
}

SCSS

$custom: #51d2f2;
$custom-light: #94e0f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d2f2",
  "rgb": {
    "r": 81,
    "g": 210,
    "b": 242
  },
  "hsl": {
    "h": 191.925,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.80538,
    "c": 0.11971,
    "h": 217.4
  },
  "luminance": 0.54253
}

Semantic roles & 50–950 ramp

primary

#51D2F2

secondary

#B94A2E

accent

#2F03E3

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D2F2

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

Preview Lab → · Contrast checker → · Palette generator →