#51D6F2#51D6F2

#51D6F2 is a light, vivid cyan. Relative luminance 0.563; OKLCH L 81.5% C 0.120 H 214.4°. Best body text is #000000 at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#51D6F2
RGB	rgb(81, 214, 242)
HSL	hsl(190, 86%, 63%)
HSV	hsv(190, 67%, 95%)
CMYK	cmyk(66.5%, 11.6%, 0%, 5.1%)
CIE-LAB	lab(79.75, -27.54, -24.36)
CIE-LCH	lch(79.75, 36.77, 221.50°)
OKLab	oklab(81.46% -0.099 -0.0678)
OKLCH	oklch(81.46% 0.12 214.4)
XYZ	xyz(43.4602, 56.2484, 92.5538)
Luminance	0.5625 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D6F2 #F26D51

analogous

#51F2BD #51D6F2 #5185F2

triadic

#51D6F2 #F251D6 #D6F251

tetradic

#51D6F2 #BD51F2 #F26D51 #85F251

square

#51D6F2 #BD51F2 #F26D51 #85F251

split-complementary

#51D6F2 #F25185 #F2BD51

monochromatic

#0E9DBB #18C9EE #51D6F2 #8AE3F6 #C3F1FB

Accessibility & contrast

On white

1.71

#51D6F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.25

#51D6F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D6F2

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D6F2	#FFFFFF	#000000	##000000
##51D6F2	1.00	1.71	12.25	12.25
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.25	21.00	1.00	1.00
##000000	12.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2CFF4

Deuteranopia (green-blind)

#ABBEF2

Tritanopia (blue-blind)

#00E1DF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #51d6f2;
/* rgb */ color: rgb(81, 214, 242);
/* oklch */ color: oklch(81.5% 0.120 214.4);

Tailwind

colors: {
  custom: {
    50: '#94e3f6',
    500: '#51d6f2',
    950: '#000000',
  },
}

SCSS

$custom: #51d6f2;
$custom-light: #94e3f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d6f2",
  "rgb": {
    "r": 81,
    "g": 214,
    "b": 242
  },
  "hsl": {
    "h": 190.435,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.81461,
    "c": 0.12,
    "h": 214.4
  },
  "luminance": 0.56253
}

Semantic roles & 50–950 ramp

primary

#51D6F2

secondary

#B9462E

accent

#2A03E3

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D6F2

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

Preview Lab → · Contrast checker → · Palette generator →