#51AED8#51AED8

#51AED8 is a light, moderate cyan. Relative luminance 0.370; OKLCH L 71.1% C 0.107 H 230.4°. Best body text is #000000 at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#51AED8
RGB	rgb(81, 174, 216)
HSL	hsl(199, 63%, 58%)
HSV	hsv(199, 63%, 85%)
CMYK	cmyk(62.5%, 19.4%, 0%, 15.3%)
CIE-LAB	lab(67.26, -15.00, -29.44)
CIE-LCH	lch(67.26, 33.04, 243.00°)
OKLab	oklab(71.14% -0.0682 -0.0823)
OKLCH	oklch(71.14% 0.107 230.4)
XYZ	xyz(30.9192, 36.9762, 70.4601)
Luminance	0.3698 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AED8 #D87B51

analogous

#51D8BF #51AED8 #516AD8

triadic

#51AED8 #D851AE #AED851

tetradic

#51AED8 #BF51D8 #D87B51 #6AD851

square

#51AED8 #BF51D8 #D87B51 #6AD851

split-complementary

#51AED8 #D8516A #D8BF51

monochromatic

#206C8F #2B92C1 #51AED8 #83C5E3 #B5DDEE

Accessibility & contrast

On white

2.50

#51AED8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.40

#51AED8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AED8

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AED8	#FFFFFF	#000000	##000000
##51AED8	1.00	2.50	8.40	8.40
#FFFFFF	2.50	1.00	21.00	21.00
#000000	8.40	21.00	1.00	1.00
##000000	8.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99ACDA

Deuteranopia (green-blind)

#869ED7

Tritanopia (blue-blind)

#00BABC

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #51aed8;
/* rgb */ color: rgb(81, 174, 216);
/* oklch */ color: oklch(71.1% 0.107 230.4);

Tailwind

colors: {
  custom: {
    50: '#8ec6e4',
    500: '#51aed8',
    950: '#000000',
  },
}

SCSS

$custom: #51aed8;
$custom-light: #8ec6e4;
$custom-dark: #000000;

JSON

{
  "hex": "#51aed8",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 216
  },
  "hsl": {
    "h": 198.667,
    "s": 63.38,
    "l": 58.235
  },
  "oklch": {
    "l": 0.71142,
    "c": 0.10687,
    "h": 230.4
  },
  "luminance": 0.36979
}

Semantic roles & 50–950 ramp

primary

#51AED8

secondary

#DDB8A8

accent

#7541E6

background

#F9FCFD

surface

#F2F8FB

border

#CCD1D4

text

#0D1315

muted

#7E8283

Preview Lab

Preview with #51AED8

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

Preview Lab → · Contrast checker → · Palette generator →