#51C8DA#51C8DA

#51C8DA is a light, moderate teal. Relative luminance 0.481; OKLCH L 77.3% C 0.108 H 209.0°. Best body text is #000000 at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#51C8DA
RGB	rgb(81, 200, 218)
HSL	hsl(188, 65%, 59%)
HSV	hsv(188, 63%, 85%)
CMYK	cmyk(62.8%, 8.3%, 0%, 14.5%)
CIE-LAB	lab(74.90, -27.72, -18.86)
CIE-LCH	lch(74.90, 33.52, 214.23°)
OKLab	oklab(77.29% -0.0944 -0.0523)
OKLCH	oklch(77.29% 0.108 209)
XYZ	xyz(36.6972, 48.1159, 73.6694)
Luminance	0.4812 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C8DA #DA6351

analogous

#51DAA7 #51C8DA #5183DA

triadic

#51C8DA #DA51C8 #C8DA51

tetradic

#51C8DA #A751DA #DA6351 #83DA51

square

#51C8DA #A751DA #DA6351 #83DA51

split-complementary

#51C8DA #DA5183 #DAA751

monochromatic

#1F8392 #2AB0C4 #51C8DA #83D8E5 #B6E8EF

Accessibility & contrast

On white

1.98

#51C8DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.62

#51C8DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C8DA

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C8DA	#FFFFFF	#000000	##000000
##51C8DA	1.00	1.98	10.62	10.62
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.62	21.00	1.00	1.00
##000000	10.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C1DB

Deuteranopia (green-blind)

#A3B2DA

Tritanopia (blue-blind)

#00D1CD

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #51c8da;
/* rgb */ color: rgb(81, 200, 218);
/* oklch */ color: oklch(77.3% 0.108 209.0);

Tailwind

colors: {
  custom: {
    50: '#90d9e5',
    500: '#51c8da',
    950: '#000000',
  },
}

SCSS

$custom: #51c8da;
$custom-light: #90d9e5;
$custom-dark: #000000;

JSON

{
  "hex": "#51c8da",
  "rgb": {
    "r": 81,
    "g": 200,
    "b": 218
  },
  "hsl": {
    "h": 187.883,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.77286,
    "c": 0.10791,
    "h": 209
  },
  "luminance": 0.4812
}

Semantic roles & 50–950 ramp

primary

#51C8DA

secondary

#DEAFA8

accent

#5640E8

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C8DA

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

Preview Lab → · Contrast checker → · Palette generator →