#51C5DA#51C5DA

#51C5DA is a light, moderate teal. Relative luminance 0.467; OKLCH L 76.6% C 0.107 H 211.5°. Best body text is #000000 at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#51C5DA
RGB	rgb(81, 197, 218)
HSL	hsl(189, 65%, 59%)
HSV	hsv(189, 63%, 85%)
CMYK	cmyk(62.8%, 9.6%, 0%, 14.5%)
CIE-LAB	lab(74.02, -26.24, -20.18)
CIE-LCH	lch(74.02, 33.10, 217.57°)
OKLab	oklab(76.58% -0.0913 -0.056)
OKLCH	oklch(76.58% 0.107 211.5)
XYZ	xyz(36.0092, 46.7400, 73.4401)
Luminance	0.4674 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C5DA #DA6651

analogous

#51DAAA #51C5DA #5180DA

triadic

#51C5DA #DA51C5 #C5DA51

tetradic

#51C5DA #AA51DA #DA6651 #80DA51

square

#51C5DA #AA51DA #DA6651 #80DA51

split-complementary

#51C5DA #DA5180 #DAAA51

monochromatic

#1F8092 #2AACC4 #51C5DA #83D6E5 #B6E7EF

Accessibility & contrast

On white

2.03

#51C5DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.35

#51C5DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C5DA

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C5DA	#FFFFFF	#000000	##000000
##51C5DA	1.00	2.03	10.35	10.35
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.35	21.00	1.00	1.00
##000000	10.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4BFDB

Deuteranopia (green-blind)

#A0B0DA

Tritanopia (blue-blind)

#00CECB

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #51c5da;
/* rgb */ color: rgb(81, 197, 218);
/* oklch */ color: oklch(76.6% 0.107 211.5);

Tailwind

colors: {
  custom: {
    50: '#90d7e5',
    500: '#51c5da',
    950: '#000000',
  },
}

SCSS

$custom: #51c5da;
$custom-light: #90d7e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51c5da",
  "rgb": {
    "r": 81,
    "g": 197,
    "b": 218
  },
  "hsl": {
    "h": 189.197,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.76582,
    "c": 0.10712,
    "h": 211.5
  },
  "luminance": 0.46744
}

Semantic roles & 50–950 ramp

primary

#51C5DA

secondary

#DEB1A8

accent

#5A40E8

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C5DA

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

Preview Lab → · Contrast checker → · Palette generator →