#51B2CF#51B2CF

#51B2CF is a light, moderate cyan. Relative luminance 0.381; OKLCH L 71.7% C 0.100 H 220.5°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#51B2CF
RGB	rgb(81, 178, 207)
HSL	hsl(194, 57%, 56%)
HSV	hsv(194, 61%, 81%)
CMYK	cmyk(60.9%, 14%, 0%, 18.8%)
CIE-LAB	lab(68.09, -19.87, -23.22)
CIE-LCH	lch(68.09, 30.56, 229.44°)
OKLab	oklab(71.69% -0.0757 -0.0646)
OKLCH	oklch(71.69% 0.1 220.5)
XYZ	xyz(30.5717, 38.0920, 64.7607)
Luminance	0.3810 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B2CF #CF6E51

analogous

#51CFAD #51B2CF #5173CF

triadic

#51B2CF #CF51B2 #B2CF51

tetradic

#51B2CF #AD51CF #CF6E51 #73CF51

square

#51B2CF #AD51CF #CF6E51 #73CF51

split-complementary

#51B2CF #CF5173 #CFAD51

monochromatic

#246C82 #3194B2 #51B2CF #81C7DC #B1DCE9

Accessibility & contrast

On white

2.44

#51B2CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#51B2CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B2CF

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B2CF	#FFFFFF	#000000	##000000
##51B2CF	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0AED1

Deuteranopia (green-blind)

#8EA0CF

Tritanopia (blue-blind)

#00BCBB

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51b2cf;
/* rgb */ color: rgb(81, 178, 207);
/* oklch */ color: oklch(71.7% 0.100 220.5);

Tailwind

colors: {
  custom: {
    50: '#8ec9dd',
    500: '#51b2cf',
    950: '#000000',
  },
}

SCSS

$custom: #51b2cf;
$custom-light: #8ec9dd;
$custom-dark: #000000;

JSON

{
  "hex": "#51b2cf",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 207
  },
  "hsl": {
    "h": 193.81,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.71693,
    "c": 0.09953,
    "h": 220.5
  },
  "luminance": 0.38095
}

Semantic roles & 50–950 ramp

primary

#51B2CF

secondary

#D8B0A4

accent

#6B48E0

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B2CF

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

Preview Lab → · Contrast checker → · Palette generator →