#51C0CF#51C0CF

#51C0CF is a light, moderate teal. Relative luminance 0.440; OKLCH L 75.0% C 0.102 H 207.5°. Best body text is #000000 at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#51C0CF
RGB	rgb(81, 192, 207)
HSL	hsl(187, 57%, 56%)
HSV	hsv(187, 61%, 81%)
CMYK	cmyk(60.9%, 7.2%, 0%, 18.8%)
CIE-LAB	lab(72.20, -26.96, -16.98)
CIE-LCH	lch(72.20, 31.86, 212.20°)
OKLab	oklab(74.99% -0.0905 -0.047)
OKLCH	oklch(74.99% 0.102 207.5)
XYZ	xyz(33.5008, 43.9501, 65.7371)
Luminance	0.4395 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C0CF #CF6051

analogous

#51CF9F #51C0CF #5181CF

triadic

#51C0CF #CF51C0 #C0CF51

tetradic

#51C0CF #9F51CF #CF6051 #81CF51

square

#51C0CF #9F51CF #CF6051 #81CF51

split-complementary

#51C0CF #CF5181 #CF9F51

monochromatic

#247782 #31A2B2 #51C0CF #81D1DC #B1E3E9

Accessibility & contrast

On white

2.14

#51C0CF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.79

#51C0CF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C0CF

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C0CF	#FFFFFF	#000000	##000000
##51C0CF	1.00	2.14	9.79	9.79
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.79	21.00	1.00	1.00
##000000	9.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1B9D0

Deuteranopia (green-blind)

#9EABCF

Tritanopia (blue-blind)

#00C8C4

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51c0cf;
/* rgb */ color: rgb(81, 192, 207);
/* oklch */ color: oklch(75.0% 0.102 207.5);

Tailwind

colors: {
  custom: {
    50: '#8fd3dd',
    500: '#51c0cf',
    950: '#000000',
  },
}

SCSS

$custom: #51c0cf;
$custom-light: #8fd3dd;
$custom-dark: #000000;

JSON

{
  "hex": "#51c0cf",
  "rgb": {
    "r": 81,
    "g": 192,
    "b": 207
  },
  "hsl": {
    "h": 187.143,
    "s": 56.757,
    "l": 56.471
  },
  "oklch": {
    "l": 0.7499,
    "c": 0.10201,
    "h": 207.5
  },
  "luminance": 0.43954
}

Semantic roles & 50–950 ramp

primary

#51C0CF

secondary

#D8AAA4

accent

#5A48E0

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1415

muted

#7E8283

Preview Lab

Preview with #51C0CF

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

Preview Lab → · Contrast checker → · Palette generator →