#51ADD7#51ADD7

#51ADD7 is a light, moderate cyan. Relative luminance 0.365; OKLCH L 70.9% C 0.106 H 230.6°. Best body text is #000000 at 8.31:1 contrast (WCAG AA passes).

Color values

HEX	#51ADD7
RGB	rgb(81, 173, 215)
HSL	hsl(199, 63%, 58%)
HSV	hsv(199, 62%, 84%)
CMYK	cmyk(62.3%, 19.5%, 0%, 15.7%)
CIE-LAB	lab(66.93, -14.78, -29.40)
CIE-LCH	lch(66.93, 32.90, 243.31°)
OKLab	oklab(70.87% -0.0675 -0.0822)
OKLCH	oklch(70.87% 0.106 230.6)
XYZ	xyz(30.5979, 36.5397, 69.7171)
Luminance	0.3654 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51ADD7 #D77B51

analogous

#51D7BE #51ADD7 #516AD7

triadic

#51ADD7 #D751AD #ADD751

tetradic

#51ADD7 #BE51D7 #D77B51 #6AD751

square

#51ADD7 #BE51D7 #D77B51 #6AD751

split-complementary

#51ADD7 #D7516A #D7BE51

monochromatic

#206B8D #2C91BF #51ADD7 #83C4E2 #B5DCEE

Accessibility & contrast

On white

2.53

#51ADD7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.31

#51ADD7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51ADD7

8.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51ADD7	#FFFFFF	#000000	##000000
##51ADD7	1.00	2.53	8.31	8.31
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.31	21.00	1.00	1.00
##000000	8.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98ABD9

Deuteranopia (green-blind)

#859DD6

Tritanopia (blue-blind)

#00B9BB

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51add7;
/* rgb */ color: rgb(81, 173, 215);
/* oklch */ color: oklch(70.9% 0.106 230.6);

Tailwind

colors: {
  custom: {
    50: '#8ec5e3',
    500: '#51add7',
    950: '#000000',
  },
}

SCSS

$custom: #51add7;
$custom-light: #8ec5e3;
$custom-dark: #000000;

JSON

{
  "hex": "#51add7",
  "rgb": {
    "r": 81,
    "g": 173,
    "b": 215
  },
  "hsl": {
    "h": 198.806,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.70867,
    "c": 0.10634,
    "h": 230.6
  },
  "luminance": 0.36543
}

Semantic roles & 50–950 ramp

primary

#51ADD7

secondary

#DDB8A7

accent

#7542E6

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1215

muted

#7E8183

Preview Lab

Preview with #51ADD7

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

Preview Lab → · Contrast checker → · Palette generator →