#51BFCB#51BFCB

#51BFCB is a light, moderate teal. Relative luminance 0.433; OKLCH L 74.6% C 0.101 H 205.1°. Best body text is #000000 at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#51BFCB
RGB	rgb(81, 191, 203)
HSL	hsl(186, 54%, 56%)
HSV	hsv(186, 60%, 80%)
CMYK	cmyk(60.1%, 5.9%, 0%, 20.4%)
CIE-LAB	lab(71.77, -27.62, -15.43)
CIE-LCH	lch(71.77, 31.64, 209.20°)
OKLab	oklab(74.61% -0.0911 -0.0427)
OKLCH	oklch(74.61% 0.101 205.1)
XYZ	xyz(32.7991, 43.3193, 63.1213)
Luminance	0.4332 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BFCB #CB5D51

analogous

#51CB9A #51BFCB #5182CB

triadic

#51BFCB #CB51BF #BFCB51

tetradic

#51BFCB #9A51CB #CB5D51 #82CB51

square

#51BFCB #9A51CB #CB5D51 #82CB51

split-complementary

#51BFCB #CB5182 #CB9A51

monochromatic

#25747C #33A0AC #51BFCB #80D0D9 #AFE2E7

Accessibility & contrast

On white

2.17

#51BFCB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.66

#51BFCB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BFCB

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BFCB	#FFFFFF	#000000	##000000
##51BFCB	1.00	2.17	9.66	9.66
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.66	21.00	1.00	1.00
##000000	9.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B1B8CC

Deuteranopia (green-blind)

#9EAACB

Tritanopia (blue-blind)

#00C6C2

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #51bfcb;
/* rgb */ color: rgb(81, 191, 203);
/* oklch */ color: oklch(74.6% 0.101 205.1);

Tailwind

colors: {
  custom: {
    50: '#8ed2da',
    500: '#51bfcb',
    950: '#000000',
  },
}

SCSS

$custom: #51bfcb;
$custom-light: #8ed2da;
$custom-dark: #000000;

JSON

{
  "hex": "#51bfcb",
  "rgb": {
    "r": 81,
    "g": 191,
    "b": 203
  },
  "hsl": {
    "h": 185.902,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.74606,
    "c": 0.10063,
    "h": 205.1
  },
  "luminance": 0.43323
}

Semantic roles & 50–950 ramp

primary

#51BFCB

secondary

#D5A8A3

accent

#594ADD

background

#F9FCFD

surface

#F2F9FA

border

#CCD2D3

text

#0D1414

muted

#7E8283

Preview Lab

Preview with #51BFCB

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

Preview Lab → · Contrast checker → · Palette generator →