#51ACC0#51ACC0

#51ACC0 is a light, moderate cyan. Relative luminance 0.351; OKLCH L 69.7% C 0.091 H 214.2°. Best body text is #000000 at 8.01:1 contrast (WCAG AA passes).

Color values

HEX	#51ACC0
RGB	rgb(81, 172, 192)
HSL	hsl(191, 47%, 54%)
HSV	hsv(191, 58%, 75%)
CMYK	cmyk(57.8%, 10.4%, 0%, 24.7%)
CIE-LAB	lab(65.79, -21.23, -18.42)
CIE-LCH	lch(65.79, 28.11, 220.94°)
OKLab	oklab(69.68% -0.0751 -0.0511)
OKLCH	oklch(69.68% 0.091 214.2)
XYZ	xyz(27.6565, 35.0575, 55.1682)
Luminance	0.3506 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ACC0 #C06551

analogous

#51C09C #51ACC0 #5174C0

triadic

#51ACC0 #C051AC #ACC051

tetradic

#51ACC0 #9C51C0 #C06551 #74C051

square

#51ACC0 #9C51C0 #C06551 #74C051

split-complementary

#51ACC0 #C05174 #C09C51

monochromatic

#28626F #388A9B #51ACC0 #7EC1D0 #ABD7E1

Accessibility & contrast

On white

2.62

#51ACC0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.01

#51ACC0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ACC0

8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ACC0	#FFFFFF	#000000	##000000
##51ACC0	1.00	2.62	8.01	8.01
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.01	21.00	1.00	1.00
##000000	8.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DA7C1

Deuteranopia (green-blind)

#8D9BC0

Tritanopia (blue-blind)

#00B4B2

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #51acc0;
/* rgb */ color: rgb(81, 172, 192);
/* oklch */ color: oklch(69.7% 0.091 214.2);

Tailwind

colors: {
  custom: {
    50: '#8cc5d3',
    500: '#51acc0',
    950: '#000000',
  },
}

SCSS

$custom: #51acc0;
$custom-light: #8cc5d3;
$custom-dark: #000000;

JSON

{
  "hex": "#51acc0",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 192
  },
  "hsl": {
    "h": 190.811,
    "s": 46.835,
    "l": 53.529
  },
  "oklch": {
    "l": 0.69679,
    "c": 0.09083,
    "h": 214.2
  },
  "luminance": 0.3506
}

Semantic roles & 50–950 ramp

primary

#51ACC0

secondary

#CEA79F

accent

#6951D6

background

#F9FCFC

surface

#F1F8F9

border

#CBD1D2

text

#0D1214

muted

#7E8182

Preview Lab

Preview with #51ACC0

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

Preview Lab → · Contrast checker → · Palette generator →