#51B8CA#51B8CA

#51B8CA is a light, moderate teal. Relative luminance 0.403; OKLCH L 72.9% C 0.098 H 210.8°. Best body text is #000000 at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#51B8CA
RGB	rgb(81, 184, 202)
HSL	hsl(189, 53%, 55%)
HSV	hsv(189, 60%, 79%)
CMYK	cmyk(59.9%, 8.9%, 0%, 20.8%)
CIE-LAB	lab(69.68, -24.42, -18.05)
CIE-LCH	lch(69.68, 30.37, 216.47°)
OKLab	oklab(72.91% -0.0841 -0.05)
OKLCH	oklch(72.91% 0.098 210.8)
XYZ	xyz(31.1901, 40.2914, 61.9989)
Luminance	0.4029 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B8CA #CA6351

analogous

#51CAA0 #51B8CA #517BCA

triadic

#51B8CA #CA51B8 #B8CA51

tetradic

#51B8CA #A051CA #CA6351 #7BCA51

square

#51B8CA #A051CA #CA6351 #7BCA51

split-complementary

#51B8CA #CA517B #CAA051

monochromatic

#256E7B #3498AA #51B8CA #80CBD8 #AFDEE7

Accessibility & contrast

On white

2.32

#51B8CA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.06

#51B8CA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B8CA

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B8CA	#FFFFFF	#000000	##000000
##51B8CA	1.00	2.32	9.06	9.06
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.06	21.00	1.00	1.00
##000000	9.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B2CB

Deuteranopia (green-blind)

#97A4CA

Tritanopia (blue-blind)

#00C0BD

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #51b8ca;
/* rgb */ color: rgb(81, 184, 202);
/* oklch */ color: oklch(72.9% 0.098 210.8);

Tailwind

colors: {
  custom: {
    50: '#8ecdda',
    500: '#51b8ca',
    950: '#000000',
  },
}

SCSS

$custom: #51b8ca;
$custom-light: #8ecdda;
$custom-dark: #000000;

JSON

{
  "hex": "#51b8ca",
  "rgb": {
    "r": 81,
    "g": 184,
    "b": 202
  },
  "hsl": {
    "h": 188.926,
    "s": 53.304,
    "l": 55.49
  },
  "oklch": {
    "l": 0.72909,
    "c": 0.09784,
    "h": 210.8
  },
  "luminance": 0.40295
}

Semantic roles & 50–950 ramp

primary

#51B8CA

secondary

#D5AAA2

accent

#614BDD

background

#F9FCFD

surface

#F2F9FA

border

#CCD2D3

text

#0D1314

muted

#7E8283

Preview Lab

Preview with #51B8CA

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

Preview Lab → · Contrast checker → · Palette generator →