#51B8CB#51B8CB

#51B8CB is a light, moderate teal. Relative luminance 0.403; OKLCH L 72.9% C 0.098 H 211.6°. Best body text is #000000 at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#51B8CB
RGB	rgb(81, 184, 203)
HSL	hsl(189, 54%, 56%)
HSV	hsv(189, 60%, 80%)
CMYK	cmyk(60.1%, 9.4%, 0%, 20.4%)
CIE-LAB	lab(69.71, -24.13, -18.55)
CIE-LCH	lch(69.71, 30.43, 217.55°)
OKLab	oklab(72.95% -0.0837 -0.0514)
OKLCH	oklch(72.95% 0.098 211.6)
XYZ	xyz(31.3089, 40.3389, 62.6245)
Luminance	0.4034 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B8CB #CB6451

analogous

#51CBA1 #51B8CB #517BCB

triadic

#51B8CB #CB51B8 #B8CB51

tetradic

#51B8CB #A151CB #CB6451 #7BCB51

square

#51B8CB #A151CB #CB6451 #7BCB51

split-complementary

#51B8CB #CB517B #CBA151

monochromatic

#256F7C #3399AC #51B8CB #80CBD9 #AFDEE7

Accessibility & contrast

On white

2.32

#51B8CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.07

#51B8CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B8CB

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B8CB	#FFFFFF	#000000	##000000
##51B8CB	1.00	2.32	9.07	9.07
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.07	21.00	1.00	1.00
##000000	9.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B2CC

Deuteranopia (green-blind)

#96A4CB

Tritanopia (blue-blind)

#00C0BE

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #51b8cb;
/* rgb */ color: rgb(81, 184, 203);
/* oklch */ color: oklch(72.9% 0.098 211.6);

Tailwind

colors: {
  custom: {
    50: '#8ecdda',
    500: '#51b8cb',
    950: '#000000',
  },
}

SCSS

$custom: #51b8cb;
$custom-light: #8ecdda;
$custom-dark: #000000;

JSON

{
  "hex": "#51b8cb",
  "rgb": {
    "r": 81,
    "g": 184,
    "b": 203
  },
  "hsl": {
    "h": 189.344,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.72948,
    "c": 0.09822,
    "h": 211.6
  },
  "luminance": 0.40342
}

Semantic roles & 50–950 ramp

primary

#51B8CB

secondary

#D5AAA3

accent

#614ADD

background

#F9FCFD

surface

#F2F9FA

border

#CCD2D3

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51B8CB

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

Preview Lab → · Contrast checker → · Palette generator →